real time strategy sometimes needs fast reaction.
like you an lose a battle for not reacting fast enough cause the game just keeps running.
this game, every player (computer or human doesn't matter) will have its own turn, during your turn nobody else will do a thing. so you can take your time to see whats going on, think of a strategy, see some stats, talk to the IA, negotiate a bit, manage your planets and than hit the turn button. than the IA will play its turns. (this will take from 1 second to like 20 seconds during BIG games with HUGE militairy's).
i know this game keeps the adrenaline level lower than RTS and i think thats a good advantage

. + you get to think of some nice strategy's and can sit down, relax and watch over your empire and see whats missing and what needs to be done without having to worry about what happens on places that you currently do not see on your screen.
hope this helps a little bit.
oh and yea, GC2 is a very good game!!
and i also like RTS games allot, rise of nations, C&C to name just a few.