I've got a bit of experience in that other sim, in adversarial multiplayer, so I think I've got a couple observations.
The things that hurt it in that other sim:
If it gets single-shot by HE rounds, it either explodes or incurs such terrible aerodynamic drag penalties that it is useless. Its armament of AP only .50cal might as well be spit wads, as they are simulated on the other side of the fence -- so you can't take nor can you deliver any meaningful damage. With regards to the FM, it is an absolute dog. It doesn't retain energy (inertia doesn't seem to be a thing), something it should be really good at considering its mass. It also doesn't seem to be able to turn at all in any meaningful way without absolutely bleeding all of its energy, and because of awful acceleration, it's impossible to get it back.
These things combined make it a bit of a meme choice. It's really not good at anything except maybe power output at altitude, and maybe climb with the paddle prop if the pilot knows how to mitigate some of the other absolutely crippling deficiencies (there's some funky FM breaking stuff you can do with flaps, but it's pretty ridiculous, and could get you into trouble if you don't know what you're doing).
Long story short, if you see one online it's an easy kill 99% of the time.
By contrast, in my limited time so far in DCS, the damage modeling and armament don't seem to be a factor either way. And you can absolutely pull the thing around and it turns at low level surprisingly well. I'd need to give it more time, but it seems far more competitive in DCS.