I'd have to agree with Jack on this one...although I think it's possible to get pretty close to the same results with soil if you keep everything ideal the hydro system provides more of what the plant wants more of the time so it would lead me to believe times would be a bit shorter for hydro...

I haven't flowered yet using my new aero system but since I've got the veg growing well I've noticed daily growths that show an increase in fullness that far surpass what I did in soil...I would find it difficult to believe plant roots could breathe as much as they truly desire in soil because most of the root is in contact with the dirt

I'm wondering what the conditions of these attempts were for stoned and fasts that make them believe hydro isn't quicker

one thing I do know is that if you make a mistake or "ooops" as jack put it you will notice the problems much much faster which would also push me to think that you would notice positives faster too

I could be talkin out my ass but the people at NASA are pretty smart and if they say it's better I usually just accept it as true enough haha