+Chris Malkiewicz in that case the search bar is most likely dependent on Google play services version as well. Try pulling the new playstore and google play services apks and installing them both on your other devices and see if that correctly updates the play store.
+Charlie Aczon 320x320 is for watches with that resolution. Right now, that's just the Samsung Galaxy Gear Live but there are others coming out this year with that resolution. You want the G Watch version if you have that device since its resolution is 280x280. The watch has some hardcoded pixel values in there making things not line up properly if you use the wrong version.