>>713322229Several
SupCom has bigger scale, so you're almost always zoomed out. SupCom has 4 tiers of units and the economy grows much larger, but also makes it so you never see the later tiers in a well played game. Buildings have adjacency bonus and they're important to take into consideration. But the main problem is that SupCom FAF is on an outdated engine that only runs on 2 cores and will always choke, and there's no more support for it.
BAR is a Total Annihilation sequel, plays almost the same. Micro managing is much more important and you use building turrets to do almost anything. Most importantly, the engine is new so no issues there.
If you want more SupCom, Sanctuary Shattered Sun is gonna be more like it.