In looking at the different plans offered in the bitcoin.com cloud mining pool, and plugging them into GreyWyvern's calculator, not a single plan will deliver more BTC than you put into it.
Personally, I don't understand the calculator myself. I reasoned that people won't be mining at all if the outcomes of the calculator were the case (no offence @GreyWyvern

). In all fairness, I do believe it is difficult for the calculator to predict accurately because it may be trying to determine very irregular and non-linear interactions by a model that is at best linear (the periodic guesstimated values over time.)
I use spreadsheets and charts to predict future expectations, and I'm comparing the real outcomes with both my predictions and the calculator predictions. It has been 2 months now and I'm not too off track (I need to be way off track for the calculator to be correct). In fact, my shift from expected can be well explained by the drop back from 120% to 100% reward due to reducing transaction fee earnings by the pool, as I started tracking from the 120% period.
I am still working the data and in time I will be able to say how my tracking has worked out for me.
You may also want to check out other prediction wares...,
https://bitcoinwisdom.com/bitcoin/calculator
https://btc.com/tools/mining-calculator
Since these calculators are designed to accommodate the use of mining hardware (e.g.. Antminers), you will have to adjust for certain measures such as replacing "Hardware Price" with your Cost to purchase your hashrate, and set delivery, setup & maintenance costs to zero. Electricity price will be the pool's fee for your purchased hashrate. etc.