Is Cruiserweight one of the most underrated divisions of boxing today?

Yes, I agree. And more than being underrated, it's largely unpopular. It doesn't get the exposure that heavyweights, middleweights and welterweights get so we don't get to see much of the talents out there. What happens is that cruiserweight fighters just bulk up to become heavyweights, just like Evander Holyfield, etc.