Originally posted by h1a8
I don't know anywhere in the movie where that information about the blasters are given.In Phathom Menace we get to see how fast force users really are. A couple of times the movie show them blitzing and becoming blur in real time.
Also a human can react in 0.2 second. If both crossed a skyscraper in a few seconds then that's not fast enough for a human not to be able to react (from battle distance).
It doesn't need to be stated in a movie for it to have canon sources. You're being intentionally dense to act like it does. But it's you so I'm not surprised.