The Stuart just got nerfed hard, it's okay at helping deal with dangerous AI light vehicles, and not much else.
Try the M20 if you need AI, it's very good now.
I reckon he meant for the US.
M20, Greyhound, and Flak track survives 2 hits only.
Greyhound has 400, it got buffed by getting the skirts by default, good AI vehicle that can pester lights with it's .50 caliber mount.