They are not comparable since the parameter are different even if the price is higher.
The miner price of $799 for 44Mhs miner consumes 1000Watts.
But the 50Mhs Alfa-T miner, if they deliver, consumes only 375Watts.
The lower power consuming miner can also be run for many more difficulty cycles that the counter part.
So the final out of both are different after deducting electricity expenses.
All depends only if they delivery at least in the next delivery date.