I'm growing it right now so in about 3 months Ill be able to tell ya how it grows and smokes. The 48 doesnt mean that it will take 48 days from seed to finish, it can take as little as 48 days to finish flowering from when you cut the lights back. As for the 1 gram thing it is reportedly a very good yielder, someone on either this website or cannagraphic said he got 5 oz. off each plant vegging for one month.
It doesn't have anything to do with AK-47, it is a cross between Ice and Jock Horror from what I understand, getting its Indica tendencies from the Ice and it's high from the Jock Horror. Like I said though this is just stuff that I read and will have some actual experiences with it in about 3 months.