Quinn could be the deepest character in the game if DPC wanted to make her a deep character but he has chosen not to even make her a primary LI, therefore the statement was based upon the shallow character Quinn is thus far, not the one she could be. The entire substance of Quinn is doing, fighting, fucking, and fucking with people. There's nothing interesting about her because DPC has chosen not to develop her on any meaningful level. She's a good-looking girl with a scarlet "T" for trouble. She can't be trusted. Not by Sage. Not by the MC. Not even by Tommy. So, even assuming you want to see what's under her shell it's probably an eminence front; it's a put on. What you see is not what you get with Quinn.