He has had a lot of issues in the past, however lately he has looked phenomenal and has very legit KO power.
Jones is not untouchable at all, he has ate many punches, and someone with huge KO power can give him a lot of trouble.
Anthony Johnson
Everybody is talking about Gus vs Jones, however do not count Rumble out.
He has a good chance against Gustafsson, and definitely a chance against Jones.
Rumble is a very different fighter now. He is strong like a bull, he is very confident, very athletic. I will not be surprised if he actually beats Gustafsson.