The problem with Arlovski these days is his confidence is still shot and he's still too tentative. He's got all the tools, but he's having trouble putting it all together and using them. Basically, it's like a sports team that's going through a bad slump, all the players are still the same but nothing seems to work right.
As we saw in his last fight, Arlovski still has crazy punching power, he's down on his ass and he still manages to knock the other guy silly with one punch. He has to learn to trust and use that power the way he used to, take some lessons from Chuck Liddell or something. Both of them have the power to put opponents in really deep trouble with a single punch, the difference is Chuck trusts his power and knows he can use it to beat anyone while Arlovski doesn't seem to these days. If he can get his confidence back, he's going to be a force to be reckoned with in the HW division.