Anyone with that much experience and skill, whether BJJ, Judo, Sambo, or Wrestling could do well in mma. The potential is totally there, but putting it into action, well... Look at Yoshida as compared to Yoon Dong Sik. There's a huge spectrum of possibilities. As Blandy said, can he take a knuckle sandwich to his grill? I'd love to seem him crossover. He ought to put in a year of no-gi on the mat and hook up with a boxing/ kickboxing team during that time period also.