I was thinking the same thing, but neither of those are space RTSs, the former being a 4X, the latter being a sim.
The only thing that comes close really is Genesis Rising (ignoring the older Heagemonia and ORB), but that didn\\\'t get great reviews.
EDIT: Try Nexus, there's a demo out there, but it really shoves you in at the deep end. It IS controling spaceships, but it\\\'s NOT a space RTS, as each ship is an army in itself and irreplacible within the mission. While ships will fight on their own, each subsysytem can be tinkered with so you can, for example, drop power to engines, renforce sheilds, have one weapon array fire at a cirtain hostile while another fires at another and launch fighters to intercept hostile torpedos.
Pretty too. Like DoW2! See, this post is on topic!