Why would you post a link to an example using floats then? I mean sure, part of the trick involves treating the float as an integer but the number is still meant to be interpreted as a float.

Your assumptions about speed might be true for something like a Nintendo DS which doesn't have a floating point unit but a 3DS does, a vectorised one no less. Also in Javascript integers that can fit into 32 bits are actually integers nowadays.

All in all, I believe your information is outdated.