hp for bosses

Ok so assuming I wont be a lolnoob and get hit by bombs from pianus and pap and assuming Im pro at ducking on pap's 2nd body, 3.3k hp is already good enough to take on all these bosses without HB...? I thought we had to hp wash to do bosses? wtp :f6: So why do people hp was besides the fact some want high hp, its not really necessary to boss as far as I can see.

uh.... there are other bosses too. Pretty much the only bosses anyone "needs" to wash for are HT, PB, and maybe some like neo tokyo bosses. Plus people like being able to do bosses other then zak at a decent level, pap is easy enough but right pianus is not.