Without Mjolnir Thor is equal to the current Hercules.They are in the top rank members of the Class 100 of Strenght possessors, with Mjolnir, Thor surpass Hercules, of around 50% of physical power.
Anyway Hercules even with half of his powers can survive to a nuclear strike, same for Abomination.
No hes not as tough as the Hulk in his current incarnation.
And doesn't heal as quick.
My first thought about Abomination was no he couldn't but that was based on my knowledge of his powers from 20 odd years ago and with Marvel and there updates God only knows which Is why I said probably.
According to the Directory Hulk can't survive either.
"In addition to great strength, the Hulk's body possesses a high degree of resistance to injury, pain, and disease. The Hulk's skin is capable of withstanding great heat without blistering (up to 3,000° Fahrenheit), great cold without freezing (down to -190° F), and great impacts (he can survive direct hits by field artillery cannon shells). It is possible to injure him: he could not, for example, survive a near-hit with a nuclear warhead. The Hulk's highly efficient physiology renders him immune to all terrestrial disease."
But I read that descripiton back in the 80's edition of the Marvel Handbook so I think some of there descriptions are dated.
Id say Hulk, Juggernaut, Gladiator and possibly Thor as King Thor. Hercules is immortal however if he is struck by something of sufficient power to disintegrate the majority of his body on a molecular level then he aint getting up from that and thats a fact. The same goes for other earth races who claim to be immortal like the eternals and the externals.