1. Carwin is ahead of Mir, Mir wouldn't last 90 seconds in a ring with any K-1 level strikers. I don't think Mir could beat anyone on your list.
2. Overeem over Lesnar right now is insane. Lesnar has fought a murderers row of opponents and while he hasn't looked great he still won most of those fights. If Overeem wins the tournament then he'll be considered for a top slot but not now.
3. Schaub might be a high prospect but Nelson still beat him and Struve that puts him ahead of Brendan.
Carwin lost his last fight, Mir won his. I agree with you on Mir though, I think he is going to get beat by Roy. I also don't consider Struve to be that good, he's not really beating guys like Kongo or Gonzaga who aren't that great in their own right, instead he's beating the Morecrafts and McCorkles of the world, where Schaub is beating Gonzaga and likely to beat Cro Cop putting him on a four fight win streak.
And, Lesnar lost his last fight, Overeem has won his last couple, Lesnar probably isn't gonna beat Dos Santos either. The Werdum fight won't be a cake walk by any means for Overeem despite what some people think.
Always rooting for: Bisping, Shogun, Jon Jones, Daley, Hardy, Sonnen, Fedor, Couture, Jacare.