Keikaku said:Sorry man, but you're just plain wrong: http://www.reddit.com/r/starcraft/comments/f7e8j/seriously_guys_if_youre_in_platinum_or_below_your/
That was 6 months ago and he's on a 13 win streak with the BEST opponent from Platinum. It was also before the Infestor buff, before the warp gate research change, and the competition in the higher leagues wasn't as good, which forces better players down.
I'd be shocked if you could do that to get into Diamond. Gold players scout, so he's bound to run into a wall at that point.