I hate Brock Lesnar. I think he has zero martial arts skills whatsoever. I think he's an immature loud mouth who thinks he's still in the WWE. He makes the sport look bad and is the anthiesis of what someone in MMA should be.
That being said, he is a world class wrestler, he's huge, strong and mean. He obviously is doing something right. He gets people excited and puts fans in the seats. He got the job done against Mir and you have to give him props for avenging his prior loss.
Cro Cop is right about one thing though- And they teach this to every single person who does martial arts ( even young kids)- Technique always triumphs over muscle. So far, Brock has fought smaller, weaker, older and physically less gifted opponents. He is 285lbs of muscle, young, hungry and in shape. But, you can only get by on brute force for so long. Eventually he is going to gas himself out and collapse, or lose to someone with superior technique or comparable physical tools that is able to neutralize Brocks natural abilities. How he performs under those circumstances is going to demonstrate if he's for real, or if he's just another bully without the skills or heart to really solidify himself as a force in MMA.
