Bitstamp tested $1298 some hours ago. Interestingly for some reason, it's higher than the Bitfinex peak at $1294 (bitfinex always has the higher price for some reason)
In any case, looks like we will test the barrier again, we'll see what happens.
small differences like this are normal, it is because orderbook is not the same size in all exchanges and sometimes when someone buys or sells large amounts it eats through these orders faster than the other places.
and it seems like we are behind another barrier, the $1300 and since we have been rising all week it may take a bit longer than you might think to get over it.