Not true, there are decks that can dish out more points than GS decks on a long round, i know of at least 2:
1: So, the only control option GS decks usually carry is a Coral right? That means Triss Butterfly decks can run freely, where you put 15-20 units on board and let Triss Butt do her thing, just make sure you have a way to destroy/ consume the unit that is artefact compressed, so the buffing isnt stopped, that should be enough.
2: Another swarm deck, this time more specific - NG slave infantry + sentries. If played right, it can outpoint GS by a large margin (the most i've done is 60 pts on a long R3, but he had 2 bricked medics)