pr--there's a scene where superman fights mongul on earth i think, where mongul is throwing punches and superman is dodging them effortlessly. i can't recall where it happened. i THINK it was in the arc where superman battled manchester black the second time, but i'm not positive. i've seen the scans and THINK i even have the book, but i can't remeber WHERE, exactly it happened. do you know what i'm talking about? 😕
anyway, THOSE are the types of speed feats that i think could be used to help him win this. if vulcan's powers can be used intelligently, and he can perceive that solar energy empowers superman and then forcibly DRAINS his cells, he would win this, but it took vulcan a while to figure out the eldest's powersource.
superman only needs to get in, blast his HV through hulk's eyes and issue a HV lobotomy (cable/storm did something similar to hulk and ALMOST killed him). hulk isn't healing from that and the battle is over. no BFR required.