his punch selection is more spontaneous, less rehearsed than other fighters. so his punches are harder to predict, as they come at unusual times and from unusual angles. he takes the openings as you give them, in real time. they dont carry ko power behind them because he doesnt need to be planted, but they force you to focus harder and alter your usual defensive reactions. with beterbiev bivol was able to get in a relatively comfortable routine once he adjusted to the rhythm of beterbievs distance, timing and angles. david has the ability to alter all those, depending on what youre showing him.