I agree completely. They had elite units and, like any army, if properly lead, motivated, they could take on any ragged, irregular, guerilla unit.
Too easily dismissed, like the WWII Italians, who once had been Roman Legionaries, and in the 1940s could fight with suicidal courage.
ARVN Marines for example.
The old quote "Why can't our Vietnamese fight like their Vietnamese?" (OK they did not call them "Vietnamese", they called them summat else, but these are PC times). The answer was they were the same folk and they could do so, given half a chance and decent leadership.
I do so wish anyone would produce 28mm models of ARVN. But get them right, just for once, in 28mm. Skinny guys, weapons the same size as US forces, Helmets ditto and rarely covered but far too big for them, incredibly tight overalls/pants/leggings whatever you call their nether garments, and Asiatic faces.
Here is a bet. No one will.