Don't rip me apart here but there's a lot more to what makes a great projector than going really black and just because JVCs going blacker than everything else doesn't mean that makes them automatically better than the rest.
It doesn't mean it's automatically the 'best' for every situation, no-one ever said that.
However, when all things are balanced out, the overwhelming majority of people in the shootouts, the online reviews, the experts seem to favor the JVC generally speaking.
In the reverse, I could say just because you prefer a specific tech or projector does not mean that a different projector might not be a better fit for the majority.
The argument of what is best is a logical fallacy in itself, because there are differing methods of coming to the conclusion of what is best.
However, given X-Y-Z factors and applying a general formula of what 'the consensus' states, you'd be hard pressed to argue that they don't generally prefer a JVC.
Sure, not always (no-one said that), but generally.
So your argument, although maybe with the best of intentions, does not really make sense to the majority.
If you were trying to pick out a toy for a 6-year old, and 80% of the toy reviewers around that age recommended a specific toy, you'd have a lesser chance of being wrong picking the toy out than you would if you went with the 20% opinion.
The word majority needs qualifying here I think.
The 'majority' to me, is not those who frequent here.
We are a minority in the eyes of most.
I know of only one other person in my life (and yes, I know more than three people ) who even remotely shares my passion for home AV kit. Literally everyone else I know could not care less about what is minutely better than the next thing as long as they are happy that they have got a decent picture for the money paid.
Not sure that is relevant as it sort of shows 'following the herd' syndrome. Go by what the child actually wants and enjoys, not simply by what is viewed as the best by those you don't know.