It's weird to me to see Julius Caesar listed here, Crabcake. Did Caesar lose a fair amount? Sure. Dyrrhachium was a disaster for him. But Caesar was really good at minimizing the results of battles he lost and maximizing the results of battles he won. Caesar could've lost with incredible consequences at Alesia basically eliminating all Roman forces north of the Alps in the face of a Gallic confederation under Vercingetorix who would've reversed half a decade of Roman advances in Gaul overnight if he'd won. Pompey could've finished Caesar off at Dyrrhachium and preserved the corrupt Optimate dominated late Republic for another few decades. But he didn't and was always slippery and able to keep himself in play when he was down.
HERE'S a good answer for overrated, though it's a case where his personal prowess as a warrior ends up outweighing the fact that he was a total bonehead strategically and is basically directly responsible for Liu Bei's eventual losing the war.
