The 335i weighs an extra 60-80kg depending on where you source the specs. The 135i should be faster by a car or two.

But the 09 version 335 has the new 7speed transmission which is better.
To get an idea..

The new Z4 weighs more than the 335i but my friend who was lucky enough to have a demo over night ripped the same PB 4.9 (not broken in) as he has managed with his 135i..

So I think for sure the 09 335i is faster