I disagree, Nyo's guaranteed damage leaves her in a pretty poor position most of the time, either you're standing right next to your opponent with no setup options and you're forced to guess on their wake up, or they're knocked away fullscreen and neutral gets reset, which depending on the match up is either a good thing or a bad thing
You are not at a disadvantage when they're on the ground. If they get blown away full screen Nyo has the advantage because she has superior ranged options.
I woudln't call a knockdown that offers no setup as having advantage, it's slight advantage at best but since both players are forced to guess it's not a great situation, personally i'd rather go for the knockdown where I can force a reaction and break through their defense (i.e psudo force tech) as opposed to a knock down that has decent guaranteed damage but now i have to account for the many WU options they have