Matchmaking?

Okay I am in S2, but why the hell I was put in a match where enemy had 3 and gold tier players, and my team- was me, another silver and 3 unranked players (and they havent played even 100 games) I play this game for a long time (1600 wins))

I don't say that I should be a higher by rank, but Im sure I should have same good teammates, and accept defeat because it was tough fight, but in this scenario it was snowballing...