Would be interesting to see a side-by-side grow (DWC or E&F versus Aero)
I know that in hydroponics some strains need less time then in soil.
Perhaps of the fine mist, the roots develop more towards a lot of thin root hairs. (instead of just a few roots)
A couple of thin root hairs have more surface then 1 bigger root.
Thus the plant maybe absorbs more oxygens and nutrients and develops faster.
Once the plants (and roots) get bigger, the rootball starts looking more then any other rootball in hydroponics.
This could explain why in veg you save time, but once your are in bloom, the difference will not be so big.
I am just guessing, so don't start yelling at me that this is all BS