Take a look at this thread from last year.
www.elitefourum.com/t/should-i-return-this-is-it-a-fake-neo-rev-with-red-flags/28292/1
Tl;dr OP did the light test on a real Neo Rev holo and then insisted on it being fake even though dozens of e4 pros told them it’s real. Light test got them bamboozled.
Therefore I say the light test is misleading and has not much substance as a standalone test.