It's 340 np and 50 fu. You don't consider tech cost as unit cost. Tech cost is about timing, unit cost is about performance.
I would love to see this lose to an ostwind. All you have to do is flank it, and use its snare while your at gun does the work.
The AEC isn't a puma. It is a mix between the stuart and the puma. More at than the stuart, but less ai and armor. Better snare as well.
the ostwind have one of the fastest turret in the entire game. It can rotate 120 degree(?) per seconds. it's next to impossible to "flank" it.
the AEC's tank snare is also vet1, and given its poor performance against infantry there isn't really a lot of targets for it until the tank arrives.
The AEC have poor scaling ability. It's basically the puma without the 50 range. The AEC/bofor serve the important role of anti-vehilce unit, they need to be a good investment. PIATS are too innaccurate against moving tanks and the british lack a tank snare. They need to use the AEC or bofor to defend against early tank or vehicle.
It dies to a minimum of 3 scout cars, not 2.
scout cars are not a good comparison for a unit except as a a baseline. It's one of the most fragile vehicle in the game.