Regarding Sterling by Musicman

First of all, just for clarification: SBMM is the sterling by musicman line right? Like Squier by fender? Whereas EBMM means the real deal?

So I've been looking at SUB sterlings for a while when I noticed someone selling a SBMM Ray34 in my price range. I haven't been able to find much info about the specific Ray34s though. I notice one of them has a finished headstock matching the body, and the other is just natural. Is the difference between these two just 2 vs 3 band EQ? I notice the ones with 2 band EQ are selling for more expensive than the 3 band. Is that just lucky? or is there something about the 2 band ones that is considered "better"

Any help would be appreciated

Thanks,
-Mike