Uh you have seen Tysons last 3 or 4 fights? There are a lot of guys out there better than kevin mcbride and danny williams. Thats a stretch to say Tyson gives most of the division fits. If he doesnt knock them out within the first 2 rounds he doesnt have much chance.
I'm not saying he beats today's top 10 fighters, but he'd give them a hard time for the first four rounds or so. He could beat someone like Barrett, Dimitrenko, Minto, Maskaev or Bowe (who really shouldn't be allowed to fight). Tyson still can move and is not brain damaged. If he wants to fight and make some money, let him!