You could always buy the proper tool for adjusting the Fender, you wouldn't have to loosen the neck or remove the guard.
For what it's worth, I have found the opposite to be true. Cheaper basses tend to require more frequent adjustments for me. Mind you, if that Sterling has an oiled neck expect it to need adjustment is you fart in it's direction. EBMM necks are touchy in my experience, I adjust my Ray regularly when it is in the rotation.
That all being said, you may just prefer the Ray and there is nothing wrong with that. They are very different animals.
What is this "proper tool" of which you speak?