Posted by chickmagnet
Here's my list:
Mirko Cro Cop (of course)
Anderson Silva
Semmy Schilt
Igor Vochanchyn
BJ Penn
Lyoto Machida
and of course all the guys who came from K-1 over to MMA.
Cro Cop would need a tune up before returning, indeed he may have been out of the K-1 game for too long to ever return the level of skill he once had.
Anderson Silva is a good striker, not sure if he is K-1 good since so far we have only seen him chewing up MMA fighters, none of whom were even thought of as great strikers by MMA's standards. He is too big for MAX, but too small for the Heavyweights, Much like Melvin Manhoef. I'd give him even less of a chance than Manhoef though (who regularly loses anyway) since he is more of a technical strikers than Manhoef - at least Melvin can batter people out with hard shots, as he does have very powerful punches, whereas Silva's weaker combos would be blocked and countered by the HW tanks like Le Banner and Aerts.
Semmy Schilt is much more a K-1 fighter than an MMA fighter anyway, so I think putting him on the list is a bit daft. He doesnt really focus on MMA training anymore since he is constantly having K-1 fights lined up for him.
Igor Vovchanchyn fought in K-1, and he lost badly to Hoost. Granted, you could say he was perhaps thrown to the wolves a little early, but no matter how many tune up's he had, his physique would always hold him back against the lankier K-1 HWs. For a HW, Vovchanchyn has stubby limbs and would get picked apart by most good K-1 HWs, as Hoost did to him.
BJ Penn - He would have to fight in MAX, where guys like Souwer, Buakaw por Pramuk, Kraus, Masato and possibly even Yodsaenklai would demolish him. He doesnt work kicks into his MMA game so its sae to say he probably doesn't train them much or at all, and they would be vital to success to MAX. Even with his talent for being a quick learner, I wouldnt give him a chance in MAX, too many strikers who are just quicker and more technical than he will ever be. His striking is good by MMA standards though, certainly more than enough to embaress the other UFC LWs like Sherk.
Lyoto Machida - Even against other 205lbers, in a ring he would get whooped. His footwork isn't that fancy and no mater how "elusive" he is I bet even a half decent 205lb kickboxer would find him very quickly. Playing the Andy Hug card won't work either; he doesnt have Andy's power or his talent. Furthermore, Karate isn't the mysterious secret weapon to the Dutch Muay Thai style that just about all the good European Kickboxers adopted, but since Hug has this kind of lore about him, people still tout it as a secret weapon sometimes. Look at Glaube Feitosa, a very talented karateka, but not wildly successful in K-1. He doesnt have the power of the Muay Thai styled strikers, and while he is exciting to watch from an aesthetic point of view, his fancy kicks don't seem so fancy anymore, and he lacks the power to get the jobs done.
As for the rest of MMA, I still don't believe there are any strikers who are near good enough to make it in K-1. Sure, some MMA guys could win against some of the lower level guys, but against the names, the MMA guys are just too sloppy and amateurish to ever stand a chance.