I just had a chat with avi and realized that he doesn't know what he's talking about. On top of that he went offline in the middle of our discussion which makes him a legitimate suspect of being a pussy. IMO of course.
Anyway I think lots of you don't get my point, like avi. So I'm using my awesome paint skills as a last resort to try and show you what I mean.

This piece of art speaks for itself I guess. It's what AHK does to your space delay, immediately set it to 0 every time you press space. If you still don't understand then I really can't help you.
The most important question now is. Do you realize that the process of holding down one space and pressing the other space is very likely to happen in a larger time frame than 0.02 seconds?
What makes you think it's all happening in two frames?
And once you come to realize that I'm right, how does this PX script help detecting AHK script users?