Your math is right. But the fuel stabilizer and bottom cover are, in my opinion (stress on "opinion") necessary parts of the package, which pushes you to almost 11 ounces.

I did just notice on my gear list that in my previous post, I also included the weight of the Jetboil spoon, plus I jumped down a line; the 14 ounce weight I gave was for the aluminum, not titanium, version of the Sol. So, twelve ounces is closer, and it's only a quarter pound heavier than my MicroRocket/Titan Kettle combo.