Even the regular cloud mining contracts aren't producing enough profits anymore so how is this micro contracts any different? I'm guessing the payouts will be lower lol.
A video card can bring on average even more than it is declared in a calculator, for a year investments can grow and more than 2 times, it all depends on the course and rewards of the network.
For me, if all the potency is sold, it will bring me less money than if I was just engaged in mining, but this will allow me to return the invested funds earlier and I will be able to buy more equipment.