My problem with Michael Bisping is the distinct lack of progession in his Mixed Martial Arts game. He's been talking a good game in the build up to his more recent fights, and been looking good in training, but he can't seem to translate that into fight performances. If you look at the way one of his earlier opponents has improved, Rashad Evans. Evans has gone from a straight wrestler to a well-rounded mixed martial artist, with impressive boxing to back up his high level wrestling, he's getting better and better. Bisping's not really added anything of note to his game, except marginally better wrestling and jiu-jitsu. His striking seems to have shown zero progression. He changed his stance to more of a boxing stance for the Silva fight, and we'd been hearing about his new found KO power, but where was it? Once again he looked gun-shy, scared to throw his power into his shots and the change only had aesthetic benefits.
I don't know what Mike can do to make it up to the next level. He seems to be improving technically in training, and we've seen that in his Countdown videos and from what we've been hearing from his camp, but he can't seem to put it together in a fight situation, which gives the impression that he actually hasn't improved. He's still beating the mid-level MW fighters, like he was early in his UFC career, but he never looks like handing a beating to a top level fighter. He's capable of sticking and moving and out-pointing opponents (he won the 1st round against Henderson, and was winning the Wandy fight until the last 20 seconds AFAIC), but he can't seem to get the job done, and is yet to convincingly beat a top level fighter.
As far as I can see, Bisping's issues must be mental. There must be something on a subconscious level that's stopping him putting his new found tools on the table against the top level of competition. I think he could really improve his game by getting a sport psychologist or even a sport hypnotherapist in to discover what exactly is stopping him upping his game and moving up to that next level. Moving camp could help to some extent, but if the mental fragilities are there (and I believe they are), then moving camp probably won't get him upto that next level and will only help him improve to a small extent.