I am new to this sphere, so please don't judge strictly.
I have started to learn about blockchain technologies, BTC and other crypocurrencies and right now interested in mining. I know that mining of BTC is not very profitable right now, but other currencies can be profitable.

I looked at ETH, DASH and Monero and according to https://www.cryptocompare.com/mining/calculator/xmr?HashingPower=4.86&HashingUnit=TH%2Fs&CostPerkWh=0.12&PowerConsumption=1210 I can earn near 150K per day with AntMiner S7, which seems to be unrealistic.

Please help me understand how this staff works, is it real or I have some misunderstood something?

Thanks in advance!