Back when I played 1v1, they seemed like the UKF version of the panic puma. I've tried them a few times in the live game and they seem to have too little range for something that dies in 3 hits and is allegedly a TD. There's no reason it should have less range than a Stug and cost more. Pathing is a little better but that's the only thing that's better.
M10 has the same range as Stug and it has a turret. The unit is quite good actually.