Rahman was facing a much better version of Lewis than Bruno did, Lewis was pumping the jab far more than he did vs Frank, neither Rahman or Bruno were very good defensively in thee fights, but their gurds were being held in a similar position and their head movement was lousy, so who would come out on top?
Tricky fight to predict. Either fighter had the power to end the other. I might go with Rahman, simply due to the fact that Bruno had a tendency to choke, but it's really not anything I'd like to bet on.