He would be absolutely murdered, even by the third tier fighters like Congo. He should retire in shame or stay with StrikeFroce where he can make a few more bucks fighting cans. Oh wait, even there, he is getting his ass kicked...
I think when Carwins gets a little cardio he will be unstoppable. SO heavy handed.
Carwin will never have the hand speed or gas to keep up with Velasquez...he'll never be anything but a one round wonder unless he elects to do nothing in the 1st.
Fedor of 2005 would walk through most of the current UFC heavyweight guys. But, even in his prime he would not get past Cain, JDS or Carwin.