What's dubious is that no one has produced any kind of evidence beyond 'I think it feels like Finecast' to go against FWs explicit statement that they did not use Finecast resin. Nor has any evidence been presented that these tests were deemed unsuitable. No offense to those who think they have FW Finecast intended, but I have Finecast models showing half a dozen variations in rigidity and even more with FW. I have an Avatar I purchased back in 2007 (I think?) which is just like Finecast.
And before anyone accuses me of defending FW or GW or whatever other nonsense, I'll just say again is all I want is some actual evidence to back up the claims people have made. As I've twice now linked to comments from FW explicitly denying these claims. Evidence, not opinions.