You're asking for data, but that's the thing - I've already proved it's possible through the prior examples.
So did I, I already have said that this is possible - but also I said it's less frequent and more importantly, much less effective as people (and you) tend to believe. (had you visited the link I provided?)
So a few players made it into top 50 with only a few sorties.
Well, take away Kill Points, and the top 50 will be full of them. Even more so, suddenly there are a lot of players in the top 10 with only very few sorties. This absolutely contradicts your theory that kill points are not weighting things at all. They are, and quite so.
When Kill Points had no such effect, nothing much would change when I eliminate it from the rank calculation. But the opposite is happening.
And I'm not just takign a look at a few selected players - I run the rank calculations for all 'active pilots' (those with at least one kill or death in anything) just like the HTC rank calculator does.