The FHA's minimum requirements for credit scores are actually lower than the guidelines used
by most mortgage lenders.
But the FICO model is the one used
by most mortgage lenders (as of right now, anyway).
As of right now, in 2011 - 2012, the FICO model is the one used
by most mortgage lenders.
Mortgages are likely to lag, since the FICO scores used
by most mortgage lenders are two versions old.
The FHA's minimum requirements for credit scores are actually lower than the guidelines used
by most mortgage lenders.