The ironic complaint about team vs. solo carrying
Regardless of how you put it, one person being bad will lose you the game.
In a team-oriented experience, your whole team can play around a bad lane phase or one person not being that good. However, one person dropping the ball means you all just up and lose, especially if it's late game.
In a solo-oriented experience, yeah you COULD be the guy that pops off and becomes literally unstoppable...but what if the guy that does ISN'T YOU? Now you're like 2/1/1 in lane, but the enemy Riven's running around going 12/2/7 and popping every anal cavity she comes across. Your whole game's ruined, and there's hardly anything you can do about it.
All because of one fucking moron.