A lot of factors in there, size of the pots, how long they are allowed to veg, etc. I worked at a grow where we went from 7 gallons to 10 gallons to 20 gallons. When we switched to 20 gallons, the owner wanted to SHORT our veg by 2-3 weeks because he thought he needed to catch up on harvest. I tried so hard to explain "you can't go into a bigger pot and give LESS time to veg," but he didn't listen, and fuck man.... what a WASTE of time, money, water, nutrients, medium. Could have produced the same plants in 5 gallon pots and saved epic fucking shit tons of time.
At my last grow, we'd put our rooted clones (I'd say 2 weeks average) in 1 gallon pots, then those would veg until rooted (about 2 weeks,) then moved to 5 or 7 gallons. About 6 weeks total in veg (this floats a bit,) then 9 weeks total in flower. So you're looking 15 weeks minimum (that's veg and bloom.) Things can always be moved up or down, but that directly effects harvest weight. Summer plants grow nearly twice as big as winter plants with the sun intensity (so you'd go to a larger pot in summer time.)
Now here's the kicker (and you'll all find this funny,) a lot of grows are perfectly happy getting a quarter pound harvest per plant. Hell some grows don't even average that. Few people are growing the 25 foot tall trees, instead they are growing 5 to 6 foot tall plants (if even that.)
So in terms of weight, I 10000% believe that autos can compete with photos on the floor with most ops. It's just being able to repeat/replicate the strain. If you can't replicate that, you don't have a user experience that can be repeated (and that's the selling point.)