The newer Alpini hoodies seem to weigh a bit more. I just received one from REI that is about 15 oz in medium. Instead of having velcro closures on the waist, it has snaps (much better in my opinion). It's a very warm jacket – so I can easily imagine it has 7-8 oz of down inside.
I have an older, non-hooded Micro Puff Pullover (circa 2005) that weighs about 15 oz, as well, and is significantly less warm. I don't think the synthetic fill jackets at that weight are going to compare in warmth to the Alpini.