How many NPLs with equity go back to lender at auction?

[Jan Gates]

My company is looking to purchase a pool of first position NPLs in various states in the U.S. All notes are within 6 months of foreclosure some have equity and most are underwater. Our model is to foreclose and then sell the REO to investors. Our concern is that any note that has equity above CLTV will get overbid at the foreclosure sale, so we would not be able to take the property back.

Are there any statistics as to what percentage of NPLs with equity go back to the lender?