Why Was This Match Made? (Ranked Matchmaking Complaint)

Why was this match put together? http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2156409693/35729311

According to my external website of choice, here are the team matchups:

My team: Me (silver 5) - 115 Season 6 ranked games My Duo partner (bronze 1) - 112 games This guy (bronze 1) - 20 games This guy's duo partner (bronze 3) - 23 games Another random (bronze 1) - 36 games

The other team: Player 1 (bronze 1) - 26 games Player 2 (silver 5) - 89 games Player 3 (silver 4) - 132 games Player 4 (silver 4) - 172 games Player 5 (silver 5) - 185 games

Why would you match two teams that are more than a full league apart ( average less than Bronze 5 vs more than Silver 5) and have a 2x disparity in games played (avg 60 vs avg 120).

Needless to say, our bronze 3 player didn't ward, didn't do damage, and had the lowest gold on the team (other than the support), and basically threw the game. Is the MMR bonus from having a friend in the game so much that it makes this a "fair" matchup?

And note that this wasn't after 10 minutes of matchmaking - this was a 2-3 minute match.