I can see Brock struggling against good strikers too. And man does he need to work on his cardio. He was already running out of steam in his fight with Randy. Guess its much harder working for the W than simply controlling someone
I don't think his cardio's ever gonna be great just cos of his sheer size, thats a lot of muscles that need oxygen.
Randy was doing a good job of pushing the pace until he got caught and I think think that's a good way to fight Brock TBH. Don't let him keep his weight on you and control you and make him work for position, of course that's easier said than done considering Lesnars obvious power.