Well I was playing a lot of Kog'maw and it wasn't going so well for various reasons. After a match where the Riven top went 1-6 early on while I was just going even in my lane, I decided to switch to Ezreal because his early game is a lot stronger. All was going well, lane was being won, then I checked and saw that the enemy Irelia had a 120 CS lead on our top.
I suppose what I'm saying is that you usually don't see that sort of crap when the randoms get bot lane. At least I usually don't. Mid and Top (and Jungle) seem far more prone to doing really badly early on and anti-snowballing out of control.
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Black Turtle did a pretty good job.