But the difference is that Kane has been pushed several different times over the years to the point where he has still remained over and maintained credibility with the crowd. Christian just hasn't had those chances but inversely wasn't able to maintain what little momentum he gained with the crowd during his ECW run.
Largely, I agree with what you've been saying in this thread, but to be fair to Christian the ECW momentum was killed by the crappy last minute title change (to Zeke) and then being given nothing of note to do until MITB recently. If they'd have made a nice little angle out of him retiring the ECW title and used that as justification to give him a (losing) WHC title shot (even on TV or part of a 4-way) it would have been a perfect way for the office to guage how much the fans actually wanted the strap on him.... IF indeed they even have the slightest consideration for him being a world champ at some point (which I don't beleive they have).
I think, whether it be on SD or Raw, Heel or face... Even in the midcard:
Raw: Miz, Nexus,
SD: Drew, Cody, Ziggler
Way to many younger guys vying for the TV time that he'd require for a push.
Christian, welcome to Matt Hardy's world.