It's not a straight votes vs. posting time chart, but weights submissions by other factors, like how fast the voting goes and other factors I don't even know about.
Anyway, why do you care? I have stupendous amounts of karama but a lot of my submissions sink like a stone anyway, other times I post something that I consider amusing but unimportant and am surprised to find it sitting at the top of the front page hours later. It's not like there's some special store where you get to exchange karma points for cash/equity/delicious cake, although if anyone wants to set that up I would be totally supportive of it.
This isn't the first time you've got upset about this: https://news.ycombinator.com/item?id=9241171 I suggest you stop worrying about it.