DND_Reborn
The High Aldwin
We played published modules (as is) as well as a lot of homebrew stuff. We followed the treasure tables for monsters for loot, neither adding nor subtracting from the results. When I DMed AD&D (which was most of the time), it was always "let the dice fall as the may". If I rolled up a vorpal sword for a Giant Beaver a party of 3rd-level characters defeated, they got a vorpal sword. Sometimes that was a huge boon in xp (such an item was worth 10,000 XP after all!), as even divided by the 5 characters would be enough alone to be half the XP they need to level!Depends if you're running published modules stock (which is what Quasqueton was looking at), or whether you're tweaking them to reduce trasure and-or increase monsters, or whether you're running homemade adventures.
It also depends how much of the treasure is actually found compared with what's available, ditto how many monsters are fought compared to the complete roster in the adventure. Wandering monsters present another headache as every DM handles them differently, particularly in frequency of occurrence.
This didn't look at advancement by session counts, only adventure counts e.g. G1, G2 and G3 would be three adventures. Every table is going to take a different number of sessions to get through any given adventure, thus comparing adventure to adventure is more valid.
Also, he was comparing 1e to 3e; this was begun in times before 4e had come out (never mind 5e!), and people were remarking on 3e's (to them) astonishingly fast level advancement compared to 2e.
Either way, as I have said repeatedly, awarded XP for treasure was typically maybe half (at best) of the total XP accumulated. Some times it was more, most times it was less. Now, it is subjective to the DM. If they want faster leveling, the award treasure at a higher ratio, using 1-1 as a baseline for an average encounter instead of something hard. I typically awarded 1 XP per 5 gp recovered for the average (think moderate in 5E) encounter.
As far as the per session comment, it has nothing to do with adventures. I am simply talking about the rate in playing time at which characters in 5E level compared to AD&D. Of course it varies from group to group. In 5E the suggested rate is a level per 2-3 sessions (4-hour), in AD&D we would be lucky to level in twice that time. In our CoS game we made level 6 in only 8 sessions (granted, we accomplished a lot), but that is pretty fast and was simply by the XP awarded for defeating what we encountered.
In the long run, if you disagree with my experiences and they differed from yours that is fine and just say so, but what someone else did as their analysis is immaterial to me and my experiences.