ATH = $1242 @ Mt Gox
You cannot count that BS price on Mt Gox when they were ALREADY insolvent and did not payout $$ withdrawals, hence btc price on that exchange was constantly $100 higher since smart people were converting all fiat currencies on MtGox to btc, then withdrawing btc.
The CNY price at the moment reminds me a bit of Mt Gox prices. Bitcoin costs more than $100 more (equivalent) in CNY than in USD, that's pretty weird.
I don't like the ATH being quoted as less than $1200, as I distinctly remember it being higher than that. Ok the price wasn't fair back then, but the price on Stamp at the time also wasn't a true price, it was just following Gox.
I get the idea this discussion will be history in the next day or 2 anyway. The new ATH in USD will be upon us in the next regardless which price you use.