Why didn't you test Topre? jk
On a serious note, that is interesting. Fortunately for everything I do on the keyboard, perfectly timed simultaneous hits are not necessary.
haha.. this is just a casual test using the simplest motions committed to muscle memory.
I don't think however, that the multi-stroke issue is impossible to overcome..
I Think if I practiced hitting 3 keys faster, harder, and with more follow through.. they should all go down with closer proximity, and thus closing the success rate distance between cherry's 2mm disadvantage.
HOWEVER.. if you could buy a tool where you don't have to use as much force... especially when it's a tool that requires repetitive motion ... probably most likely stick with the arcade sanwa buttons....