At the end of the day you're fighting a losing battle in trying to comprehend why people find flaws in matches, I understand you're trying to better understand my opinion but realistically you need to spend more time arguing in favour of the match and certain aspects me and Cal have critiqued, rather than trying to question what people look for in a match (not trying to be condescending here btw, just clarifying we're not going to move further along until we start debating key aspects of both matches and give opposing viewpoints as to what was good/bad in both).
The match may have been occasionally sloppy (though I think people exaggerate just how sloppy it actually was) but exection is far less important than storytelling, emotion, pacing, build and character work in a match. You can have a match with flawless execution but if there's nothing to admire outside of that then the match just isn't going to peak beyond a certain level. Punk/Cena had an extraordinary Cena performance as the default heel, and the progression from Cena trying to outwrestle Punk, to Punk trying to wrestle the match of his career to Cena using his experience to control the middle portion of the match and then Punk having to build his comeback and work from the bottom, complete with some terrific near falls and selling from Cena in particular. The moment he questions the referee's call was just pitch perfect storytelling and character progression from him, the frustration and atmosphere was clearly affecting him and he sold that frustration by exhibiting some un-Cena like behaviour, which just added some meaning to what had already been a damn good match.
The atmosphere really helped them in laying out a more old school match which focused on the character dynamic and building the match around certain sequences, but what they delivered was just incredible wrestling by taking the essence of a great match and just adding so many unique and character touches to complete the match. People often like to call Cena a bad seller, but when you consider selling goes beyond limbwork and extends into drawing a crowd into a match and selling a match through your facial expressions and mannerisms, there are few better than Cena in a main event match at doing this. Cena perfectly illustrated when he was out-matched, confident, desperate and even frustrated, and the finish with him ultimately living by the John Cena code after acting contrary to it at key moments in the match just capped off the match.
The bolded is where you lost me. As a wrestling fan, I actually like to debate, discuss, and engage in conversation with other wrestling fan in regards to matches. As a lifelong fan, it makes me want to go back, watch matches, maybe look for things I may not have noticed before and try to make other fans do the same as well. It's part of the fun. I've given my viewpoints on matches. Every post I've had about a match has my viewpoint. I'm here to compare, discuss, etc, which is what we're doing.
I couldn't understand for one, how your view of Cena/Punk is what you just posted, but you've seen a load of flaws in a match like HHH/HBK, which had more story behind it, more emotion, wasn't sloppy, or botched, and also was built in the vein of a match with superb pacing and etc....
However, I cannot see the hype for Cena's role in this match. The sloppiness took a little bit away from it and while some people say it was an old school match, I disagree. It's a good match, sure, but the crowd, the atmosphere, and the finishers being overused carried the match. The actual match itself did very little in terms of character work, performance(botches and sloppiness do not equal good performance), etc... Of course, this is all relative, but as a wrestling fan, comparing and debating is key.