QQ joins the flats. Deep, in position, against a tight range — calling is how you win maximum and lose minimum.
The 3-bet range condenses toward hands that welcome a giant pot; almost everything else that plays well flats. Bloated pots with dominated hands are how 500bb stacks vanish.
Good position against a strong range. Flatting dominates: you keep their dominated hands in and your speculative hands cheap.
Assumes a ~4bb open; 3-bet to ~3x the open in position, ~4x from the blinds — larger as stacks deepen.