Part of this discrepancy is the fact that Satoko regularly gets lvl4 on her step sequences, while Wakaba usually gets lvl3. The GOE is quantified differently for lvl3 and lvl4.
I think that at this point Satoko does deserve higher GOEs, her steps look effortless but are actually extremely difficult. She is one of very few skaters whose steps coil in the opposite direction that she jumps in. I love Wakaba's steps because of her passion, timing and that twizzle

, but she still struggles executing all features cleanly enough to get lvl4, I hope that is something her team will address soon, as she loses costly points