We have had several players from SupCom FAF talking after playing with BAR controls, they now don't want to go back to SupCom FAF anymore. BAR possibly has quite some more / useful / interesting commands / features / options that can make playing and controlling your units easier.SupCom has larger maps » or at least it takes units longer to cross a map - so BAR is more intimate However, this little decrease in size, as we see it, is the sweet-spot for an RTS where you want to both be in strategic-zoom and in (closer-up) tactical-zoom levels - so you can enjoy the real battles more from up-close, instead of (mainly) moving strategic icons around.
Here is a quick list of possibly the main differences in the comparison.
There are quite a lot of similarities, due to them both being inspired by TA (Total Annihilation).