Well, I am mining lbry for a couple of days now and I think it was constantly below the calc...
Anyway, but why the difference? I am not talking about the difference in BTC revenue, which involves the Poloniex exchange rate as well. But the revenue in the coin itself, in this case LBRY.
For starters pool luck is 103.5% for last 7 days + mining at 1% fee.
Thats already 4.5% lower than average estimate.
After that you can for example have:
- lower than 100% uptime
- rejects, or lower effective hashrate than reported by miner
- coin difficulty is rising due to rising price - this will lower reward every day as long as its rising
Whats your difference btw, what kind of percentage are we talking about?