I just happened to look at the minergain home page comparing Kano and slush. They are 3EH now but the returns for the week is almost double with Kano - even with a couple longer blocks. Kano has had 24 blocks since 3/25 and the other had 588. It is amazing the impact the pool hash makes on the earnings for each block. So I for one will always Mine On with Kano!
Given that Slush uses a 1.5 hour calculation for hash submission and average block time seems to be > 1.5 hours ... a lot of hash seems to just contribute to global warming
Edit:
24 Hour average:
Calculated hashrate from block solution rate: 3.0EH
Reported hashrate from Slushpool: 3.2EH
One cant help but think, they broke something with the changes they made recently...