I should turn those into a .gif sometime.
My best guess is that it's a question of hitboxes, meaning some characters 'detect' the ground later than others depending on how their hitbox is placed as they fall.
According to my resear...data, there shouldn't be more than maybe 20 frames of difference from the time of landing to getting up between characters. Even accounting for the possibility of human error on TGM's part in pausing, it doesn't explain how we can fit a whole jump in between. As you can imagine, this can cause havoc with timing mixup scenarios on wake up, and not just for Vitalimar.
Anyway, my apologies to anyone who's lost a match because Pyroak got up quicker than you anticipated because you fight Syclant so often or something. I'd like standardize wakeup times and limit the variance to maybe something between Skulloton and Vitalimar.