Fast and furious action, great resources gathering, in depth micro and macro, superbly fun multi player.
What make command and conquer better than other strategy game is simple but great resources gathering system makes player focus more on battle and less on base building. Besides, great resources gathering make every game of red alert 3 superbly fast. Usually a game finish below 10 minutes while other real time strategy game resources gathering is so complicated you will hardly see any action in 5 minutes. This make Red Alert 3 game pack with intense/fast action and that's a lot of fun.
Every unit in the game have secondary power which make micro management a lot more complicated and that's a good thing. This is what separate C&C 3 and Red Alert 3. We won't see heavy tank rush like C&C 3 in Red Alert 3 so i bet great player from C&C 3 such as Dackel, Apollo or Relativit will have problem getting to the top.
Another great feature of command and conquer red alert 3 is amazing live action cinematic. It really bring player to the game and player will feel the intensity of the war. It's really separate C&C games from other games where some Lousy CG image talking to you.
Another good feature in Red Alert 3 is the sea battle. It makes battle more versatile so tank battle may not be the only action like in previous C&C games. It also create drastic ending for every game as advantage can easily turned once battle switch from land to sea and vice versa.
So, unlike other RTS game where you spend more time manage your resources and army than battle, Red Alert 3 bring real RTS action from the very first minute and the best part of it, It's superbly fun, fast and addictive.