Difficult to chose between them.
I liked Shotaro's because his piece was well written and his moment choice was out of left field; unfortunately for him, Sam is a master of presenting left field choices. aza1294 went for perhaps the most obvious moments and while I do not agree that everything Punk since RAW1000 has been bad, he does bring up a good point about Punk suddenly needing to cheat to win. Sure, it is a normal way to get a heel hated, but then surely the point about Punk is that he is anything but normal?
Dagger brings up the early seeming relegation of Punk and his championship as the main attraction but, as HGR mentioned, most of the occasions Punk was not on last are explainable by the presence/return of bigger stars and, as Coco pointed out, some can be explained by the decision already being made to turn Punk heel and give him some ammunition for doing so. This is one of the main points of KB's piece, although his work comes off more as a dig at the handling of Punk behind the scenes rather than an actual moment. However, much like KB wrote, it is hard to disagree with him.
Instead, a mixture of a lack of trust in Punk, an over-dependence on John Cena, a pre-set plan made over six months in advance and other unforeseen/unplanned circumstances (the return of Brock Lesnar, the rise of Ryback) has greatly stalled what should have been if not a great then certainly a different heel turn. The lines could have been blurred about whether Punk was good or bad as people agreed with him that he had been hidden in the shadows. As aza1294 said, we could have had a non-monster heel/tweener champion who was capable of beating everyone within the company in any style of match. It was almost as if Vince was scared that his top 'heel' was not going to get booed or having an all too dominate heel champion who was not Mark Henry or Big Show.
Personally, I think "so what?" It would have been something different. It could have been interesting. It could have breathed new life into the Voice of the Voiceless Punk who was so poorly managed this time last year and recaptured some of that MITB 2011 magic with a long drawn out series against John Cena, that Punk emerged a decisive winner from and then marched on to his day with destiny against the Great One.
Instead, we get whiny Heyman-backed Punk who is going to get trampled by the Brahma Bull, which still is and no doubt will be entertaining but is hardly breaking new ground. It is safe territory - whiny heel vs dominating face.
At this time of year - the autumn/winter lull before the Road to Wrestlemania begins - surely there was room for something truly different to hit our screens, with both Punk and Ryback. Instead, Vince, Creative and the WWE as a whole chose to play it safe.