i read somewhere before that they ran an EV analysis on every hand collected on party poker
between a period of time so they literally had millions of hands and found that suited cards only really give you an extra 3% at most of winning a hand. seemed a little low i thought but i guess its possible.
but back to the main topic, im gonn basically say what everyone else will say that is don't worry about it. as long as you're getting your money in good you'll profit in the long run. dont be disappointed at hands like the QQ one, you should be happy that you got him to put his stack in as an underdog.