For sure. Bradley's chin isn't one of the best in boxing but his heart is. Abregu's punching power won't be validated until he fights somebody worth mentioning. We'll see in a few hours.
Note that Bradley jumped right up after the Holt knockdown and was neither dazed or hurt. So you might say he susceptible to knockdowns but I'm not sure there's evidence of a bad chin (depending on how you define "chin")
Tim Bradley, Zab Judah, Money May And PW are the new teenage mutant ninja turtles with Pac as Master Splinter
Do you mean he would punch stronger at 147? Definitely not! He is already borderline powder puff puncher at 140, so that does not bode well with going up in weight. Fortunately, as you go higher, the opponents become slower albeit more powerful. And since he is not a slugger he will be okay.