Unbalanced matches

Pull up my friend's acc... here's what happened (no the first time): Enemy: Silver II/Bronze II/ Gold V/lvl23/ Gold II Our team: Silver V/ lvl30 (unranked)/ lvl14/ Silver V/ lvl21 The win chance was 61,1% (!) for the enemy. Never was that high before. Never seen win chance above 60% It was unfair, and totally unbalanced. Riot pls check it, and review the matchmaker.
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