If anything I'd say power at heavier weights can be overstated. Power isn't anything unless you can likewise read it, roll it and avoid it. Gears, you have to have gears and a plan B and count on your opponent knowing the whole damn alphabet. People love raw power and a good conclusive ko but there is a lot of satisfaction in breaking a guy down and gradually busting him up. I think some heavyweights get a pass at times with the ko and effect. It's understandable but honestly any weight chucking bricks but not boxing polished can have the same effect in hundreds of random 6 rounders.