Depends on where the cars are run.. For me Brunters is far to hit and miss with regards it's timing equipment (unless Stage 1 S-Tronic S3's normally run 3 second 0-60mph times?!?!) It's a great weekend and good to compare with other cars when running side by side, but I always take the times with a huge pinch of salt (some slow, some bang on, some optimistic).
A stage 1 Ed30 would certainly not be any slower than a stock 135i on a roll IMO. I ran a 13.2 in my Ed30 when Stage 1 (but with full Milltek), but that was a DSG car. Well driven manuals should run high 13's all day long.
Having driven both manual and auto M135i's, they are noticeably quicker than the previous 135i. That's obviously helped by less kerb weight and extra ponies. The auto box is perfectly set up for 1/4 mile runs too. Quick changes, short geared and also allows you to brake boost off the line for easier launches.
I am pretty certain that once some people start mapping these and chuck them down the strip at Pod, mid to low 12's will be achievable. Which for a lightly modded, 2wd hatch, is pretty dam impressive