I honestly couldn't find a RTS that lets you zoom all the way out and on top of that change your strategy every time. There's more than 1 strategy to play Supreme Commander. And I never seen a game where you send 6 nukes all at once and control where they go. And I even haven't seen a RTS that supports dual monitor.
TrueTactics
Supreme Commander has a massive amount of variety, tactics and methods in which to win the game.
The game also got Game of Year. Not recently but 2 years ago the game got Best of E3 2006, Gamespot Editor Choice award, Gamespy Best of E3 2006, 1UP best of E3, Gametrailers Best of 2006 award winner,Ign best of E3 2006, and another award for E3 2006. And that was all on the original first game.