SOASE is better than EAW and I'll explain why.
SOASE incorporates aspects of four RTS games: Total Annihilation, Homeworld, Star Trek: Armada and EAW.
From Total Annihilation we get the huge, low poly unit numbers and build style. Total Annihilation did it first and did it great. And like Total Annihilation, SOASE has no slow down. Supreme Commander tried to be TA2 but failed because of the slow down. SSOASE succeeds. The build style is also very TA since ships and building are built with just spray cans spraying at a certain area and the ship apearing some time later. TA did this, Supreme Commander did this, SOASE does this. Armada, I think, had a better way with each polygon being outlined like it was being welded to the ship, but the TA way works too.
From Homeworld SOASE gets fighter movement and general look and ship design. The ships are reminiscent of Homeworld and fighters fly around combat much like the ones from Homeworld.
From Star Trek Armada SOASE gets the gravity wells, ship interaction with planets and warp movement. The warp movement is a hybrid version of EAW and Armada. The maps are techincally all one plain but because of huge movement time, you have to warp to get anywhere. Armada did this years ago. Armada also did the way to put ships and planets both on a map. Small planets with capital ships or specially designed vessel having the ability to bombard said planets. Armada 2 also had gravity wells and any ships travelling around a planet had to drop out of warp and sublight it around them.
From EAW we get the other half of the hybrid movement. EAW did specific routes for moving around planets. In Armada, the planets were little more than just more stuff on a map. in EAW you had to build around planets, and to move planet to planet, you had to use specific space lanes. SOASE took this concept and ran and what they did is the best version of the idea.
SOASE combines all the best of all those games and does it so perfectly that Discovery channel could do a weaponolgy tree on the development of SOASE . They all came first, SOASE took the best ideas and it's here now. Games in the future that look at SOASE can only be better because SOASE is here.