Who are all these people who are terrified SupCom2 is a crap game and not even worth $4?
SupCom2 got crapped on for two major reasons when it first came out:
1) Primary reason was the economy model went from one where you have to "pay" for things as they are built, to a more "normal" RTS model of "you can't buy the $100 tank without $100 to buy it".
2) The maps and battles were smaller than in the first one.
For point #1, I'm not a die-hard to have it either way but as it was a model around since Total Annihilation I can see why it was a big deal to suddenly change it. I don't think people cared about this model too much itself, what they loved was the ability to queue up hundreds of build orders and just let them run. When SupCom2 first shipped you couldn't do that anymore since it charged you for the buildings as soon as you "bought" them, making it impossible to play that way. One of the later patches put's it back so its not QUITE like the old model, but you can queue up build orders till your hearts content which was always the most important part.
For point #2, recall that even though the maps are smaller, they are still very big compared to many other RTS games. Especially the DLC maps, I've never had any problem with. If you try and go back to the first game (I still play both), the maps feel too BIG, and the games just take way to long. They lost a nice bullet point on the box for the giant maps from the first game, but it made the GAME better IMO.
I've played both SupCom1 and SupCom2 extensively, and at the end of it I enjoy SupCom2 more. If you genuinely don't like SupCom2 that's obviously okay, but don't hate on it for stuff you remember from a review a couple of years ago... that's mostly changed. I've sunk a lot of hours into both versions of the game (including SupCom2 pre-patches) and I can promise if you like RTS it is worth the money.