High Imperial Roman army vs Late Roman army

[Mrbsct]

I know they lost, by Rome was by no means low on manpower to field another army. They were capable of fielding 50,000 on the Western side at Frigus, and 30,000 on the Easter side. Gothic armies were quite small. After all Stillico did defeat the Goths.

The reason why the Romans didn't bother finishing off the Goths was mainly political than actual manpower or lack of military capacity.