That's a bit different, they shared a single kit of memory across five platforms with five different users, and there was no rules stating this was not to be allowed in the comp. The rules on sharing clearly need to be defined better, and people need to be more honest, I mean we are doing this hobby because we enjoy it correct? Not to be #1 on some list, even though that list happens to be hwbot:p
Same board, cpu, memory, tweaks and voltages being the same is kinda hard to look past.
Is it possible that they have 20+ 7 ghz chips? Sure, but what are the chances that these two both require the exact same voltages for the exact same clock with the exact same bclk?