"At the most basic level, Real Time Strategy gameplay is most incommon with the RPGs. They both start out piss poor and building upto the point where you can take on the next big challenge. Also, they're both most frequently played by losers- no end sentence begin anew!!!!!"
Second quote's a bit long but I love the delivery.
"There doesn't seem to be much reason to develop troops. Vehicles don't move any slower, only take slightly longer to build, and, well, they're fucking tanks! The only downside I found is that the Earth Army's apparantly omitted 3-point turns and parallel parking from the driving test, and when you're trying to maneuver a large number of vehicles through tight passes, it turns into herding a particularly dim flock of sheep during an earthquake. Which can get really annoying when the enemies are defending and all your big guns are all in the back, eating grass and fucking eachother!"
Both from the Halo Wars review