I think the initial criticism was that of the live audiences reaction, as it was put "on giving that speech K.O should've been boo'd out of the building," which is fairly accurate as it did come off as hugely arrogant. The problem with face wrestlers in 2013 is that they can always been seen as heelish in certain ways, taking the fed for example you've got Showtime who is where he is on the back of manipulation and even Titus, who made it rather clear he'd rather be chasing titles than fighting the AOC. So to come out and say "I'll White Knight for you" shouldn't go over well. Regardless of why he's done that, the people in the stadium have no idea that he's been pushed into it and the whole speech was "heel 101."
The heel turn of Chris K.O was one of the best handled I've seen though, as it was a proper evolution of trying to do the right thing turned into villainous behaviour by the reaction of the fans (the other RP'ers in non kayfabe terms), aka proper supervillian, and I really think it needed to happen and its done wonders for you as well. So kudos for that.
Where do you hope to be by Kingdom Come?