Finally solved the mystery. I think your pears are being grown in the shade. The pears with the smooth skin are in full sun. My few pears in the shade on the inside of the tree are as spotted as yours. i just have a few and they were in so much shade I'm not sure I can photograph them well. I thought about it a long time to figure it out. The pear in the bottom photograph helped me to figure it out its half in the shade and half in the sun. I tried to photograph both sides. You officially have a drippin' Honey. The fruit is exquisite! It's the king of the early asian pears and no doubt Korean Giant is the best of the later asian pears! In the photographs i did my best to capture very spotted fruit in the shade.