The biggest problem was simply the teaming. I got paired with people that died within the first 20-30 seconds of the battle. I was left by myself to take on the entire opposing team. It was pathetic.
It's not like I'm complaining about the team I got, but I'm saying, teams just don't work because of that reason. People lose just because their team (that they did not pick by the way) loses it all for them.