Can't speak for other pools, but for me those payouts are combined earnings from masternodes, PoS wallets and fees.
And it's not really an accurate representations of the fees. There are a lot of miners getting paid in their altcoin of choice but the pool's fee's are always converted to BTC.
The more miners using altcoin as payout will give a false impression in the BTC payouts of the "large fee"
anyway, just a light dusting of FUD on this one but should clear it up enough for you.
thnx
Makes sense. Zpool and Hashrefinery payment sizes are really small to question any bad intent. But Ahashpool needs an explanation.
Concerning Zpool, I'm mining on Zpool for a long time and my realised earnings are always higher than Nicehash.
So although you can find a lot FUD about this pool I'm totally confident they are paying better than many other options.