This is such a strange premise for a thread.
First, who has said the above? Who has advocated taking a guy just because of the numbers he put up in a single statistical category?
Secondly, you're selling us on the idea of not using a single criterion and the way you're doing that is by using a single criterion for your case against him. So is a singleminded approach good or bad?
Finally, I'd speculate the motive behind the thread reflects the larger obsession with statistics (even though you claim you're preaching against it while you're really perpetuating it). You dug up a stat that nobody else on the board has discussed. You did a bit of googling to come up with a largely meaningless list that you formatted in such a way that it looks meaningful and authoritative. And when called on it, you don't change the methodology. Instead, you change the number of the sample pool. That's really poor research, even for casual football conversation.
What a knot of contradictions.
Two more things.
First, "getting better" in the way you use it implies that it's good to begin with.
It wasn't.
Secondly, no, it doesn't get better.