Good execution and effort.
But absolutaly no originiality.
Reminds me of end war, and too much of the same units we've seen before. Also, the superpowers don't have any difference (or any noticeable difference.) You could have at least gave them a special unit, or made them look noticeably different. It would add a whole new depth of strategy...
Make Russian tanks, defenses and super units stronger then all, U.S. ground troops, navy stronger, airforce, and support powers stronger, and Chinese Units weaker, but cheaper, and give them a higher unit max.