ww beats IM for a healhty majority because of her strength, speed AND she can fly. she also has some great defenses herself.
herc has NONE of those things. he is very one-dimensional. still, IM would have hell trying to put him down and if herc caught him it would be over. still, i might give IM the majority over herc, or at least an even split.
Iron Man should win the majority here. He would be hard pressed to harm/put down Hercules but with his vast array of weapons he doesn't have too.
Unless he goes physical, where Hercules obviously dominates, Iron Man should win.
I think battle field removal would be the smartest option, but Iron Man won't be speed blitzing him, or flying him out by grabbing on to Hercules etc. with Hercules' reflexes/speed.