Tumenov should win the stand up, and seems to be trending up in his career...like he is improving a lot.
I think Gunnar is very solid but I don't know how much he is improving. Wasn't he known as a phenom protege when he was 18? I remember reading about him a long time ago before he came to the UFC. I think a guy like that can only get so much better, maybe he peaked early.
I think Gunnar might get him down once or twice, but I don't think his takedowns are amazing or anything. Tumenov is quick. I see him keeping it standing. He's also a few years younger in age, not just fight years.
Should be a good scrap though. I wouldn't be surprised to see Tumenov tap to something.