I doubt very much you will find any benchmarking or other documentation on this trace flag. It would seem to be a "mostly-unsupported/undocumented" TF. I doubt you have time to do your own testing either, so you will just have to hope that "you will get the behavior from 2008R2".
Best,
Kevin G. Boles
SQL Server Consultant
SQL MVP 2007-2012
TheSQLGuru on googles mail service