Cointerra is $3/GH in January
Vs
BFL $10.83/GH in February (Josh said February is likely the earliest for those not in the "bullet run")
Doesn't effect anything.
It's harder to compare than that, though if you do it more thoroughly the BFL offering is probably even worse. Theirs is $10.83/GH/
year - you don't own the hardware after a year, but on the other hand, there are no hosting costs like there are with the Cointerra equipment.
Also, when running the sums, don't forget that a lot of people have the 25% discount vouchers for BFL, which seem to be applicable to this offer as well. I still wouldn't touch it myself, but there more factors in the sums than at first glance...