I think you can elevate your weight per plant & light for autos in general, & the XXLs will be much higher. I do more photo but my last run was all autos - 5 FB Mexican Airlines (not a big yielding strain) & 1 FB Gorilla Cookies. TTL under (1) HLG 600R w/co2 was north of a pound after 9 weeks from seed @ 18 on. Well over 4 oz dry from one Mexican Airlines.
I like the reduced trimming with autos (a job I hate), plus the cycle time. If I have to fog the plants or foliar, it’s so much easier. Seems like a much higher bud to leaf ratio.