Canon G15 saving .jpg in a much lower quality even than Canon G9?

On G9 i have in Function Menu options to setup the .jpg quality as: Normal, Fine & Superfine.
On G15, i have no such option... i have no ideea where to find the .jpg quality level. I only have the L, M1, M2 and S options, which don't setup the quality, but the image size.

Is this a hidden setting on G15 or am i looking in the wrong places?