I did a bit of switching back and forth. I ended up concluding that my returns on easyhash.io were a bit higher than on the graftpool.online. That may all be down to chance though.
That is true, because graftpool.online uses PPLNS System to calculate your earnings. It basically meands that you need to stay longer on a pool, but your earnings are in average 5% higher.
But do your math, just remeber that you cant compare "minging 2 hours on pool A and mining 2 hours on pool B" here.
Cheers MiRei