Keep in mind that f2pool takes 4% fee while NiceHash/WestHash only taks 2% and also keep in mind that f2pool stratum servers are far away for USA and EU users (China - as far as I now) - high latency will make you rejects and stales which will decrease your payouts - you have to take into consideration all parameters not only hashrate and prices.

Also, due to our special service implementation with extra rewards for miners on fast switching buying orders you have to monitor the actual earnings, not only hashrate of your miner, multiplied by predicted average direct Bitcoin mining. Our service has the most predictable and stable mining incomes, this is why many users stays at our pool even at declared below direct Bitcoin mining profits and this is because our stable and low latency connection and consistent payouts, - all this makes better then Bitcoin mining in short-term profit (not to mention the extreme spikes with high profits which happens once in a while ).

Thank you for using our service!