Its actually alot tougher a fight for Lesnar than people are giving credit for. Lesnars best chance in the fight is the whole "Randy wont be able to take him down". Well, Randy's striking is better than Lesnars from the little we've seen of Lesnar on his feet. Randy has the experience, and has traded punches with heavyweights such as Tim Sylvia and Pedro Rizzo. He's a world class wrestler and was winning the fight against a much larger Ricco.
Lesnar, in my opinion, has to work on his striking, so Randy doesnt pick him apart on the feet, and also on his bjj, because contrary to what alot of people think, Brock WILL end up on his back. And we've all seen what happens when a wrestler is in that position. . .