Mathematically its winnable anyway cause u have more chances to get team with 3 or 4 vs 2 or 1, so any person plays premade of 5 ppl in 2 teams rises its rating, more u play more u gain ur rating, because each arena played 3 or 4 ppl gain elo and 1 or 2 lose so overall party gains elo and each member gains if played enough. Just syncronise queue. Thats all u have to know about solo ranked arenas...