I don't do songs that are mainly piano and vocals. I find EZKeys to be about the same difficulty as BIAB. They work similarly. BIAB is a little easier since it picks the grooves/riffs for you but then you play BIAB roulette with regen until you get what you want. With EZKeys you choose what you want for each part from a library instead of the BIAB roulette/regen path.

Oh and I'm not trying to prove anything. Just providing another perspective. Feel free to ignore it, not believe it, whatever yanks yet chain!