You've still spelled "Squier" wrong.... but hey, these things happen
I've just been perusing the Fender website, and on paper at least, the CP JM definitely looks better than the new Mascis. It's mainly little details, some I probably practically wouldn't notice myself, but I guess it all probably adds up to a better guitar in the CP... Still, it would be good to try them out side by side - maybe there's something about the Macis that will just feel right for you. I do have a CP Jag, and it's not bad, but I can't really compare it to higher end Squiers because I haven't really played any (they only stock the cheap Squiers here).
Unfortunately we don't have much of an in stock selection down here in our music stores. When I got my Thurston JM I had never seen one in the flesh before. I had to order it in and just hope that I would like it (fortunately I love it)... I doubt we'll be seeing any new Mascis JMs anytime soon, and I'm certainly not going to order one just to try it