The damage model is indeed one of the best features of the sim, although I can't say if it's better than DCS:A-10.
I personally love nursing a damaged aircraft back home, desperately checking the gauges and listening to a stuttering engine or two.
If the rest of the sim were on part with the damage model I'd be a very happy simmer.
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"...late afternoon the Air Tasking Order came in [and] we found the A-10 part and we said, "We are going where!? We are doing what!?"
Capt. Todd Sheehy, Hog pilot, on receiving orders during Operation Desert Storm