There is pitzips and there is pitzips. Look at the 2 jackets i was talking about and you will understand what i mean. But the best ventilation systems are the pitzips there is no garment on the market able to have the same results than pitzips. The mec supermicroft simply doesn't have enough of them.
Same goes with DWR treatment. Just put the mec under 1hr rain. Anyway, here is the title of the first comment on the mec website for the mec supermicroft :
Not water resistant at all