Yield figures like 500 grams per square metre describe a commercial setup with a specific light and plant count, so scaling them to one plant in a two by two tent is guesswork. Vendors rarely state the conditions behind the number. For what it is worth, https://budweedseeds.com labels yields as low, medium or high rather than quoting grams, which is vaguer but at least not misleading. Your own results will depend far more on lighting and root space than on the strain.