This means that the Minergate profit calculator is complete BS?

According to the calculator, if I purchase 24 Terahashes of mining power, I should make approximately $400 per week or $1600 per month.

24 Terahashes cost about $3500 right now.

This means that the ROI should be 2.2 months, however according to your data it is 1 year.

I personally would not invest in a company that lies to their customers.

https://minergate.com/calculator/cryptonote