There is alot of dead zone at the top of a micro that can't be adjusted out.
Micros don't like to sit in the sweet spot like a leafswitch does.
You can adjust the leafswitches so that they contact at the exact point of travel that you want, and you don't need to travel as far back to release the switch.
This is because the micros use those little snap switches.
You have to press harder to activate them, than you do to keep them there because of that.
Likewise, you have to back off past the point where it contacted to get the switch to separate.
This little difference in distance is barely noticable until you play something like T&F, where you have to push the buttons repeatedly, and quickly.
The combination of those two features cause properly adjusted, and properly used, leafswitches to outperform micros.
Normally I'm a "button is a button" kind of guy in discussions, but this is one case where the type of button, and the maintenance of them, does actually affect playability.