They have several other tweets by him on the subject. But I think those above give a good idea of where he's coming from.
His forte is undoubtedly game design. And while it came at the cost of making the missions more like linear shooters he IS right that Saint's Row, SR3 at least, trounce GTA in mechanics. But I don't want an attempt at being a serious crime thriller on the story side either, maybe someone else can try to take that on.He is right. Cliffs B has good instincts
The difference is that the Dildo in SA you actually have to seek out and hunt down to get and isn't a selling point.But GTA has dildos.