Between 2 pools you can have first of all a difference between the pool fees, but not that high. Maybe just a few %. To have that huge difference I think the only explanation would be a huge difference between the total hashrate of the 2 pools. So the lower one will anyway generate less blocks so less reward for miners.
Yes soryr the pool fee was 0.9% and 1% the other.
So this is very interesting. I should keep an eye to the total hashrate? Or to the hashrate of that single coin? The higher the better?