The problem is nobody quite knows what any of this means. I play some cheapo basses that sound great, not just "reasonably good". That is because I personally have gone over them with a fine tooth comb making them just what I wanted. They started with nice pieces of wood picked out by me and "tonewood" doesn't make much difference anyway.
So now we have a question. Am I still playing a "cheap" bass? If I have an SX Pleked and plays like a Sadowsky, what is it? Yes it's $200 more for one thing. But uncounted here is what is my time worth. If I paid Roger Sadowsky to do the things I did then the bass could be worth thousands. But if I do it, and only use some of my time, is it still a cheap bass? But on the other hand *I* really like what I do to a bass so when I'm done it's specifically tailored to me. Surely that sort of thing is worth money?
The bottom line therefore, is that rules like "you get what you pay for" are simply not always valid. Sometimes you pay what the guy is charging regardless of what he's doing. And sometimes you don't pay at all and get great. So while there is SOME truth to judging a bass by it's headstock shape, it's also easy to be fooled by a Squier or SX because you don't know where it's been or who has been tweaking on it. On the other hand if you are the sort of person who isn't much with tools, then obviously you have to pay someone else to do it, and the more talented they are, the better job they do, which means the more they charge. Which is sort of what expensive boutique basses are about.