On the internet he was, and since the internet is the only place wrestling fans can share their opinions (there hasn't been any mainstream pro wrestling talk shows), it's a fair statement.
The internet today is way more WWE friendly than it was in 2006. But back in 2006, it would have been extremely tough for you to find a forum you could join where the majority opinion wasn't that Bryan was the best wrestler in the World.
Just to give you a quick example of what I mean, the original argument that brought Slyfox to the Wrestlezone...
http://forums.wrestlezone.com/showthread.php?t=11542
That thread is a clear indication of how the IWC was back then. It started to change around 2008/2009 and now it's astonishingly different than it was. Better or worse... it simply evolved.
Now, of course you can fire back with, just because it was on the internet doesn't make it so, but again man... the internet is the only place a wrestling fan can share his opinions, so if the majority of the internet is saying one thing, then it's hard to argue that it's not the widely recognized opinion, especially when we're having this discussion on the internet. You can say WWE fans didn't give a fuck about Bryan or know who he was back when he was in ROH, and you'd be right, but the fact is... back then most WWE fans didn't voice themselves on the internet, so their opinions didn't matter since no one heard them, if you get what I mean. It's the old adage, "If a tree falls in a forest and no one is around to hear it, does it make a sound?"