Actually, the yes answer was correct, though not totally transparent. The nylon web strap does attach the quilt any two places on the strap; whereas with the elastic strap, if it goes around the pad, that arrangement may be a bit draftier. If the elastic strap just goes around the sleeper, it depends on how the sleeper sleeps.
Having said that, my personal preference is not to use any of the straps. I have a 20ºF Rev, w/o overfill, and I've slept out in it in a homemade bivvy and under a TrailStar with a low temp of 8ºF and calm wind. My feet were getting a bit cold by morning, but otherwise I was comfortable. The pad was an Exped Synmat UL7.