Those guy are idiots. 265 lbs @ 5'10 and 18% BF, yet he thinks he needs all that gear? Worse yet is he thinks it is the "low" end. low end for who? For those guys? It seems so. For everyone? Definitely not. I personally knew and trained with 2 world champion powerlifters (165 lb & 198 lb class) when they were current champions, although they weighed about 190 lbs and 215 lbs most of the year.
The 190 lb guy used 5 mg of D-bol daily all year-round, along with 400 mg/test and 400 mg deca year-round. Before a competition, he would add in 100 mg tren ace/week (he did only one weekly injection with the ace ester--not to smart), 50 mg Anadrol daily, and 20 mg Halotestin daily.
Although he was a lighter guy trying to stay within his weight class, he was amazingly strong and used a fraction of the doses your buddies are claiming to use. The 215 lbs guy went a bit higher, but nothing drastic. Total gear dose was well under 2 grams/week.
They were world champions, likely stronger than your buddies despite the weight difference, and yet they used significantly less. Of course, many powerlifters do use massive dosages, but usually only the guys in the upper or unlimited weight classes.
There is no "norm" across the board--dosages can vary significantly from person to person. Personally, I think the guy you described is being a moron. No offense.