The garment and fabric technology used with some of these items are great. I've worked in this industry and really appreciate some of the equipment available. Maybe you should contact the manufacture or seller of the item (with your concerns). They may have information we don't.
I recently purchased a new cycling jacket for myself. Not for winter use, but for later this spring. I researched the on-line user reviews of all the jackets I considered. It was interesting as user input seems to vary widely for the same garments. One user would state a jacket seemed to be fitted and sized small... then another user would post the same item was over-sized and baggy. These widely varying opinions are the same results we generally found when testing garments when I worked in the industry.
I purchased a wind-proof breathable jacket myself. And I found in my own testing that it does do both, and beads water [when sprayed] as well. I had considered buying a jacket with the normal back vent and the cool zippers under the arms. But my own experience has been that most such items are over-engineered (for various reasons). The jacket I did buy has a mesh panel integrated into the rear pocket. So unzipping the front zipper causes the air to circulate inside the jacket and vent through the (unzipped) rear pocket.
I use at least two wicking layers under my jacket when cold weather cycling. A tee-shirt made of technical (wicking) fabric, sometimes a (wicking) cycling jersey, and a heavier (wicking) fleece over that. The wind resistance layer should be on the outside so the amount of venting air allowed in can be controlled. I start out a bit cooler than I would prefer if not exercising and vent before I get sweaty. The goal is to wick moisture away from my skin leaving me dry and warm. While venting moisture out of my jacket at a rate that won't rob too much warmth.
