My 2 cents.

Endless Legend = 10/10
Neptunes pride = Breaks friendships.
Red Alert = 7/10
X-com = 10/10
Galactic Civ- never played
Civ 4 - 7/10
Homeworld = never played
Supreme Commander 8/10
Starcraft 2 = garbage
Warcraft 3 = 7/10 hero system was interesting but 2+tides of darkness was way better
Rome Total War = 500000000/10 obvious is obvious
WH Dawnn of War 2= 6/10 Units + thems is incredible..control point rts was terrible idea. Just make 40K tabletop online
Sins of a Solar Empire=9/10 one of my favorites
Crusader Kings 2= 6/10 great options, but so autistic it's scary
Defcon = never played
Company of heroes 6/10 it's dawn of war with ww2 skins
Frozen Synapse = 8/10 game is excellent
Xeononauts = 7/10
Unity of Command = never played
Rise of Nations = never played

Ok, so I am genuinely upset that nothing from Heroes of Might and Magic franchise dint even get a mention. Heroes 2 and 3 were some of the BEST strategy games to ever grace the PC.

Orion also didn't get mentioned.

Europa series is excellent as are just about all games in the Paradox stable.

Star Wars Empires at war was game breaking

Gettysburg was an old title that was really incredible.

These are just a few I can think of that could easily replace some on this persons list.

[Linked Image from nodiatis.com]