But it is good if you like TA and SC, yeah?
I dunno if I'm honestly qualified to answer that. Reading their forums, the vocal people are saying that they under-delivered on complexity, units are too homogenous and lack depth, strats aren't as effective as just rushing and spamming so games play out the same often. They sold people on the idea of sending rocket-propelled asteroids into their enemies' base, and that certainly happens, but has it made for a good game?
Are these complaints of people who don't understand the kind of gameplay it was shooting for? Again, I feel under-qualified to say. I played SupCom for maybe an hour before I decided it wasn't for me. But I watched some competitive livestreams of PA and the commentators at least seemed excited about what was going. In what I've played of PA, it seems about like what I remember of SupCom. Crap loads of fast units, really fast build orders, mass moving troops, generic-feeling bases. The SP campaign last time I played...probably about a year ago or maybe longer, was a messy looking prototype that didn't add anything to the game.
So I dunno. I can't really be a lot of help on it other than recommending reading their forums and deciding who knows what they're talking about or not. I'd avoid the Steam reviews, they have pissed enough people off that they were flooded with TONS of negative, angry reviews. But you might find something in there that's informative if you can tolerate and filter out the vitriol.