In fact on this basis alone your statement that it "makes no difference at all" isn't supportable. How about we try a simple regression between presale and no-presale. Any guesses on the coefficient?
Sure. You should probably leave bitcoin and litecoin out of it, since they have the first mover(s) advantage.
That's not a simple regression. That's creating a model based on your own opinion of what matters.
Litecoin doesn't have any real first mover advantage either, except by being first to be the second to become big enough for you to consider it worthy of excluding. Say what?
So basically "makes no difference at all" is just something you made up.