Difficult call at BW as prime Gomez never fought there, so we don't know if he could make it and how the drain would impact his performance if he did. At SBW I'd make Gomez a favorite.
Imo, he's not as small as he was at featherweight,in fact he moved up from flyweight to bantamweight because of weight problems,I'd say Gomez could still control Harada tho,but it's not gonna be easy.
Hard to say. Gomez could barely boil himself down to 122 in his heyday and looked drained in a lot of fights even that light. So going down to 118 might make him a monster puncher (even more than at super bantam) and still a great fighter, but he might just be too drained. On the other hand, sometimes he looked drained and exhausted at 122 and still found second and third winds and even when he appeared to be lolly-popping punches they would explode onto the target like a grenade and leave guys senseless. I tend to think Wilfredo would somehow find the reserve to chop Harada down. Too big, too powerful, too explosive.