User blog comment:Gekkou30/Colonel Volgin vs Steven Armstrong Who's Stronger?/@comment-1971498-20130310094152

I think Armstrong is physically stronger, due to simply the advancement of technology. Nonetheless, we can't be too sure how well he can take electrical attacks as strong as Volgin's (though we did see him charge up using the MG Excelsus so it's possible that he has invulnerable to it).

That said, I think that overall Armstrong is possibly stronger in terms of sheer physical attributes. Admittedly that doesn't mean I view one or the other badly, as I think they're both equally great as well as brilliantly ridiculous Metal Gear antagonists.