Seems a bit far fetched to me. Like every breeder they inflate the numbers a bit. I have seen QP single autos fairly often. Super autos and ones advertised to be taller than a meter will more likely break the multiple Oz mark.
Some of them get pretty big, so if you got a pheno that was large and dense compant nugs you could approach some large numbers.
Edit: If you are running super autos in hydro your going to get some mega looking plants. Normal autos were pushing qp's in hydro buckets. Autos aren't all small yeild, they just have to be grown properly.
Bh.