Below I compare the pTrel distributions of soft muons from heavy flavor and light flavor MC to the distribution predicted by the muon mistag matrix on the inclusive W sample and the distribution obtained from the soft muon-tagged data.  All plots are normalized to unit area.  The comparison is done separately for each trigger type.

TCE

CMUP

CMX

All the shapes appear reasonable to me.  The mistag shape follows the shape of the light flavor MC quite well, as expected.