Pulling Focus with Alphatron SDI evf vs BMC built inscreen

How much better is it really for pulling focus than the built in screen.
I operate and pull my own focus by eye and w/ the focus peaking feature on the BMC. As run and gun/guerrilla as you can get.
Would using an alphatron evf help me get more in focus results than using the built in screen /w focus peaking.
Thank You for your comments.
I operate and pull my own focus by eye and w/ the focus peaking feature on the BMC. As run and gun/guerrilla as you can get.
Would using an alphatron evf help me get more in focus results than using the built in screen /w focus peaking.
Thank You for your comments.