Unfortunately look like that rom errored out at self test and halted resulting in crazy high score, It was a rushed benchmark run and I was using v0.225 romset with MAME 0.226 exe. Normally I'd run all the roms first to make sure there were no errors and that they entered game, but I didn't have time so I skipped that step.
I ran slrasslt on my machine and the rom halts at a prom config error, so I'll have to solve that before I try another benchmark run.
I'm planned a long overdue upgrade to my PC and wanted some MAME benchmark number before I committed to ZEN 3, I flung the scores up here as I figured people would be interested, as I couldn't find any ZEN 3 scores for MAME yet.