that would be between 700 - 950 jupiters.
even if it was KnC
15,704,175 - 5% = 785208.75
540000 GH is not 5% of the network
Elastic, your comprehension skills seem to be lacking.
Still visible on the kncminer.com FAQ page, item #2:
We will not mine with more than 5% of the hash rate we sell
Also, you seem to be using an old statistic for the BTC network hashrate too. It's currently at 18.43 million, not 15.7 million.
So, yes. They are in fact mining with more than 5% of what they've sold.