I'm not going to argue with thor but I think mercer would go for cap first seeing as he's the easiest target, easily killing and consuming cap taking his appearance and abilitys on top of his own, then that would give him a chance to get close to tony, take him out an consume him etc, then once he's tony, he could more than def get close to reed, therfore getting close to sue, then johnny, all there combined powers on top of his own intelligence combined with reed an tonys, and is regen an durability, plus his strength, if he done this quickly an swiftly enough he has a chance before thor, thing and bruce get on him, he could destroy the thing, at ease with all the combine powers + hed be huge in size probly larger than hulk, giving him an advantage over hulk an thor, not sure if this would affect his speed or not so let's say he doesn't, so by the time he's confronted by thor and bruce/hulk he's going to be a monster who with immense speed and intelligence, giving thor an hulk a great fight but in the end, thor and hulk probly beat him, he probly couldn't consume hulk even reed, stated ulk would outlive the universe, not sure if he did but that's what I heard, and he probly won't get close to thor, but then again, his powers like, whip fist, hammer fist, the armour, the arm which boosts his stregth he has a chance in scenario 1 but scenario 2 I probly over estimated him thenhe could probly kill captain america and maybe iron man with his whipfist, but he has a GREAT chance in scenario 1 and a shitty one in scenario 2