I would feel poorly if Fedor lost to Lesnar. Since I watch fights for fun and not for handicapping the odds and wanking about technique, I have no idea what the probability of that would be, but my favorite fighters to watch are the ones who look like reasonably normal human beings. Emelianenko isn't a man-mountain, he doesn't have copious tattoos, a bad dye-job, or laughable facial hair. He doesn't even have six-pack abs, let alone the cut-like-a-diamond steroidal deformities that some other fighters sport. I don't know them, so I can't judge their character, but a lot of people in the MMA business really have the appearance of young men with serious aggression problems--guys who have so much to prove that they work their bodies into blocks of iron and then cover them with inky threat-symbols. I look at Fedor and I see a trained and professional technician, whose technical discipline happens to be wrecking shit. I like his narrative structure. He is really good at ruining human beings, and he's a master at it, but he's not doing it to get back at his abusive stepdad or the bully who humiliated him in the fifth grade, it's just his job. Meanwhile Brock Lesnar looks like a sculpture of Mount McKinley made out of beef, and he has a big-ass sword tattooed up his fucking chest. Fedor beating Lesnar would renew my hope that humanity can win the war against the meat-beasts, but a loss--it would be personally devastating to me.
I also like Vitor Belfort, but mainly because of how he shows up the MMA vs. Boxing rivalry. His stand-up game is regarded as very dangerous in MMA matches because of how he can pummel opponents with fast, accurate, powerful punches, but as a boxer his hands are good but not amazing. Imagine somebody with hands like Pacquiao and some good BJJ training. With those light gloves they use in MMA it'd be like you got punched by a laser beam. Of course, somebody with hands like Pacquiao can make a lot more money at boxing, so it's not really likely, but it'd be interesting.