Estimation based on subjective "number of features", singleplayer
1. "Turn-based-" Strategy
As god as the king of the genre, Civilization, except some features missing like creating cities and manually discovering technologies. This is not necessary in RTW though, as Civ goes for 2000 years and RTW only like 250. Historically as much "real" as CIV - if the were separate award for "realism" RTW would be among the top 3 competitors
2. "Real-time-strategy"
This is actually tactical side, but since Dune and AOE it is called RTS
Allows everything except growing cities on-line. Number of units is enormous, different terrain, cities etc. Has unique morale feature, adding to realism. Beats AOE etc.
3. Castle assaulting/defending - something as own genre, but frequently a part of 2
At least as good as the king of this, Stronghold, having even some features that SH does not have. The cities look more live in SH though with lots of details like appletrees etc.
4. Visual wonders.
Well. Probably beats Doom3 :). If you downscale it to make possible to show like 2000 "monsters" on screen they will surely look such crap that RTW will own it completely.
5. Features of "artificial intelligency"
Only one thing where you could name a number of games with better AI, such as MTW, for example.
Conclusion:
My best in 3 categories ever seen on screen: strategy sim, tactic sim, eyecandy.
One category though average - the AI
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