Asiaic Pacific Ribbon

In my grandfather's medals & ribbons, I came across an Asiatic Pacific ribbon with 4 stars. I'm confused because he was in ETO-HQ COMZ/ADSEC 4267th QM Truck Sv Co (Red Ball & XYZ). He enlisted in 1935. He mentions in a letter about the "point system" that he had more than the rest of his men (he was T/Sgt) and says he had 3 stars for St. Lo -which I'm assuming Operation Cobra and before. August 1st, he was swapped back to infantry back to SOS-POL and supplied Third Army. I have tried to identify it everywhere until I pulled up a CBI Quartermaster website.  Attached Anyone know? I read the criteria and it just doesn't fit.    He did serve in Alaska 2 times. 1947-1948 & 1953-1955

Thanks for any help.