They didn’t invent that layout, they just copied it from the Dreamcast controller. If you want to go even further, the Dreamcast layout is basically the Saturn layout with the last two face buttons removed.
I think it’s better to have shoulder buttons in a fighter so you aren’t stuck with your right thumb doing everything. It’s not the default, but I usually use both bumpers and triggers for those inputs so the thumb it only responsible for two buttons.
They didn’t invent that layout, they just copied it from the Dreamcast controller. If you want to go even further, the Dreamcast layout is basically the Saturn layout with the last two face buttons removed.
The MegaDrive six button, which I guess you need for Street Fighter, also had that layout even before the Saturn.
I think it’s better to have shoulder buttons in a fighter so you aren’t stuck with your right thumb doing everything. It’s not the default, but I usually use both bumpers and triggers for those inputs so the thumb it only responsible for two buttons.
On a 3 button controller in Street Fighter, pressing start would switch your controls between punches and kicks.
I honestly forgot that the six button Mega Drive controller existed, but you’re right.