Kind of a hard question to answer if you don't qualify the number of wins by what week. For example, if I say "4 wins" this could mean 4 wins by week 4 or 4 wins by week 12 (or any other week). Ignoring week #, by any week of the season, I would say we are definite contenders by 9 wins total. By 8 wins, we will be contenders, but not necessarily "legitimate".
2 wins so far means absolutely nothing. Look what happened in 2003. We beat 2 playoff teams to start 2-0, then flopped the rest of the season - finishing 6-10. I will say we are "beyond that" when we see it. Sorry to be a pessimist, but its been sooooooo long.