Overeem is definitely a monster, but its still early to hype him as the best HW in the world.
First of all a K-1 match and a MMA match are 2 very different things. And say what you want but he still needs to beat a really Top fighter before we consider him the next big thing, Rogers was not bad competition but he was barely a Top 10.
In K-1 I think he has all the chances to win this tournament because Badr Hari is not participating and Semmy Schilt looks a bit out of shape, he was absolutely destroyed in the 3rd round by that Egyptian guy. However I would really like to see Overeem vs Ghita. Ghita is a monster with his leg kicks and is good with his hands as well.
He is definitely a Top fighter, and would obviously outstrike practically any MMA HW fighter, but as I have said, MMA is not K-1. I would love to see Overeem vs Fedor and Overeem vs Barnett.
BTW I find funny how in other forums people think that JDS would outstrike Overeem, LOL what a fucking joke. JDS is a good boxer but that is all, No one UFC fighter would last 1 round against Overeem in a striking match.