Heh, heh. Incorrect. VBAdvanceCE is one GBA emulator for WinCE that has a MIPS version as well as SH3/SH4 and ARM versions available. You can download it from this site:
Just scroll down to the VBAdvanceCE section and download it.
I doubt it will be too fast...but its worth a try, anyway.
Though, it is a HPC2000 (CE 3.0 program), I imagine it could be made to run on CE 2.11 with some hex editing.