Soooooo... a couple of thoughts:
- Yes it can be done. It can be done with any game if you're good enough at it.
- Anything can happen over a small sample size. I don't know how many games you've played, but I'm guessing probably not that many? They're certainly lower variance than, say MTTs.
- Calling with any two cards is the opposite of what nits do.
I'll add a disclaimer before the next bit: turbo STTs used to be my main game and I played a huge volume of them, but I haven't really been able to play them since Black Friday. Anywho, here goes:
There's also some strategy specific to SnGs (and tournaments in general) that you need to learn to be successful at them. Position and relative stack sizes are two things that matter a lot, especially around the bubble. There are spots where it's absolutely correct to be calling people with almost any two cards. And in general you want to be building your strategy about playing to win, not just playing to cash.
If you're letting yourself get blinded down because you haven't been catching any cards, and you're just hoping to sneak over the bubble into the money, you're asking to be pushed around by the bigger stacks.