Record weight for reissues is 99% marketing hype rather than any indication of quality. True, vinyl in the 50's was much heavier than the flimsy stuff that got produced in the 70's and 80's but there is much more involved in determining the quality of an LP pressing than the thickness of the vinyl.
(I have plenty of flimsy 70's original issues that are every bit as good as some 200g reissues)
(I have plenty of flimsy 70's original issues that are every bit as good as some 200g reissues)