I play Warframe, and used to play a lot of Planetside 2, and both are absolutely examples of P2W, even though there's nothing gameplay-relevant that money can buy that one can't grind in-game.
That said, imho both are pretty great examples of pretty fair monetisation, between PS2 offering mostly sidegrades and gifting some of the best guns as starters on at super cheap cert costs, or Warframe allowing players to trade in-game items to other players for store-money (Platinum).
P2W is absolutely a thing, but it's not the whole story. It's a pretty acceptable model imho depending on how you design it, and it allows some games to exist that would have had a hard time surviving otherwise.
As far as I'm concerned, SC is definitely in the P2W camp. No clue what the model means over the long term though, since we don't even know what people are paying for (land claims? LTI? Final economy and time-to-acquisition of ships? Ship balance? Extent of PvP and importance of expensive ships?). At the moment, it just means lots of money for CIG.