Can defeat All for One, who has been fighting trained heroes for over a hundred years.
All Might is not a smart fighter in my opinion, especially not in his prime. He lacks the feats of anything beyond having a solid foundation.
All Might defeated AFO by mostly charging and not dodging, it's even noted as being his classic style of fighting. All Might never needed tactics or skills in fighting beyond the bare basics. He could overwhelm everyone in his verse with raw power and speed while holding back.
Izuku is a much better fighter than All Might, he's just behind in terms of raw experience. AFO also hasn't been fighting for over a hundred years either, in fact he barely fights at all. His own classic style is to overwhelm his opponent with massive long ranged attacks until they go down, no real skill required.
AFO mostly lives in the shadows and doesn't fight people, he crushes people with his overwhelming superior powers.
Now in regards to a fight, this a clear stomp. All Might has no way of getting past that sheer heat and his own heat resistance is massively inferior.
Not even including any of Escanor's other advantages.
The plasma All Might could scale to is nowhere close to that level of heat. The plasma temp is unknown to me, but it's nowhere near as high as being suggested in this thread. It could be around 6000 degrees Celsius, but All Might wasn't in contact with the plasma for that long. So I don't know if he'd even scale to that full value.
This would need discussion and isn't suited for a versus thread.
Also, Bakugo's explosions don't give anyone 5000 degrees resistance. Explosions don't exist long enough for heat to transfer like that. Case in point, you can detonate nitroglycerin on a iron plate and the explosion won't melt the iron or even heats it up to be glowing.
Despite 5000 degrees Celsius being enough to melt any material known to man.
Bakugo's also never melts anything with his blasts, not including when his Quirk was super charged with One For All at 100%. Which doesn't scale to anyone.