This is weird but I am one guy you'll find with the contravening opinion to everybody else posting I here, I honestly thought this would be a little more split. I have never been impressed with edge in ANY respect, absolutely any. The fact of the amount of title reigns he has had aside, for me edge is barely world champ material.
It's strange how you phrased your question. He is obviously as good as we think he is, it would be logically impossible for him not to be but that is straying off topic really. But if I had to answer your question in the way I think you want it to be answered I'd say that Edge is, in my opinion, as good as I think he is which is not very good at all.
I feel that in the ring he comes across as petty lethargic, but not in a randy orton methodically picking apart the opponent kind of way, in a fashion that actually makes him look slow and worn out. His move set is not an issue at all as many and most WWE guys have a very limited move pool that they use often in the ring, and in longer matches like most guys, he can pull out different stuff that makes the match better. But in the ring for me he always looks deflated and everything he does is un-hyped, almost like every victory he gets is a surprise. I have also always hated that poor excuse for a spear that he calls his finisher. I understand it is supposed to be his own innovation of the move, but it just ended look looking so weak because your basically slamming the guy into the ground from about 2ft away from it. OK that isn't a flaw in edge himself, more his move set but no matter. That isn't to say i think his execution is poor, I have always liked his impaler DDT or Edgecution and think that should be his finisher because it looks far more deadly. But as a whole although he has had some LONG matches, I've never seen one which was, for me, particularly good.
The category where he would therefore have to save himself would be talking. I don't like the way he does it, not one little bit. He is another one of those guys who sounds like a breathing, eating, sleeping Teleprompter with a voice. Nothing he does with a microphone has ever been globally branded as superb or ground-breaking or memorable, certainly I cannot remember any such example unlike guys like punk or Barrett or even cena who have segments that people will at least talk about for the week leading up to the following show, edge just talks and I breeze over. In a sport where I value the ability of improvisation highly, edge certainly scores lowly for me. They ave even had the exact same problem with edge that they had with another guy who isn't a great talker, John Morrison, on being unable to lock him down to any feud or angle for very long. One week he's spearing Jericho, then he's drafted to raw and turns heel....fair enough, then he turns face he's face on team raw at Summerslam but quickly heel again with Jericho walking out, then he's a tweener on raw feuding with stupidity and the GM, then he is full blown face on Smackdown again. A lack of ideas and direction for a now 10-time world champ is a worrying thing.
He is one of very few, perhaps 3 or more guys who won king of the ring and not been elevated to stardom shortly thereafter. That to me, like it did for the man formerly known as King Mabel, screams lack of potential and raw ability to make it on the first attempt unlike guys like Sheamus and Barrett who have taken a push and used it to cement themselves as a long-term option higher on the card. It wasn't until about 2004 where he began to build up a head of steam. His former tag team partner Christian was also beginning to really flourish at this time except whilst edge was locked up in tag team competition earning little mic time, Christian was taking on the rising star in John Cena and being very impressive doing it, not to mention the fact that he had no KOTR victory to fall back on. Before leaving, Christian was actually main eventing and had his own stooge whilst edge was starting to make head-way as a singles competitor. That likely tells you Christian was or is a better package, and if that's true then your in trouble because Christian isn't god's gift to wrestling, he's just pretty good.
The best work of his career by far was during his feud with John cena in 2006 where his promo work noticeably picked up, but anything he did since or before that was pretty mediocre. And addressing the entire innovator of TLC argument. I see Edge similar to the Hardy's or Dudley's in that match where they are just lucky that the match didn't involve and technical wrestling just a great deal of spots, and the match ended up being a lot better than the guys who took part in it on that day.
If I rated Edge as a performer, I'd say he was barely on the upper side of average in and amongst the same tier as Jack Swagger and diagnose him as good enough to be a multiple time tag team and intercontinental champ. And with the longevity and perseverance despite injuries in his career he may have been deserved of one, maybe two world title reigns maximum, because there is no way in heel he is better than Chris Jericho, especially not to the point of having more than twice his number of title reigns.
The best things I can think about him are his look, his theme and the length of his career, but nothing he has ever done as I said has impressed me to the point of me considering him to be anything more than alright.
Then again if we all agreed this thread would be hella boring, so thank god I don't like Edge eh? Praise the opinionated everywhere for the immortal phrase IMO, and apply it to that behemoth works I just scribbled down.
) and it's pleasing to see how much better he's performing these past few months.