So you're assuming that the 1E players will always skip content and the 3E players will always clear out the entire dungeon?
Even when it's the exact same dungeon?
That doesn't make any sense.
It is obviously true that WotC noted that some 3e players were not getting all of the treasure that was their due, so they changed things even further in 4e to ensure that this would not be the case.
But, no, there is a big difference in finding treasure in 1e ("Tell me exactly what you do") and 3e ("I Take 20 on my Search check!").
The "exact same dungeon" using a sufficiently different rules paradigm
isn't the "exact same dungeon". As soon as you put those Seach DCs on treasures, then they cease to be the same.
However, the general rates of advancement do not require "the exact same dungeon", and, as [MENTION=1713]Melan[/MENTION]'s examination of dungeon modules shows, the 3e average dungeon actually has far fewer decision points in its layout than the average 1e dungeon. In 1e modules, you can get to your goal and miss the big treasure down the other route; in 3e modules this is far less likely.
Moreover, if you are looking at the intentions of the designers, you will note (I hope) Mr. Gygax's advice in the 1e PHB: Set a goal, and stick to it. Don't get distracted from that goal unless there is some obvious benefit. That's a paraphrase, but I can and will pull the exact quote if you have any doubt.
[MENTION=42582]pemerton[/MENTION]: Yes, D&D was used for many things back in the day, but were I to use 4e other than the way it was intended, and then make claims about what 4e is on that basis, would you support those claims?
[MENTION=29398]Lanefan[/MENTION]: Apples and oranges. Treasure in a tournament module is a means of scoring for standings; characters in a tournament don't have to be given XP to reach the next level. They start where the GM places them, as pregenerated characters of a given level. There are a few tournaments that assume Part X is directly followed by Part X+1 (A3 and A4), but this is not always the case. And even in the A3 -> A4 transfer, the characters are assumed to start A4 in a fresh (if unequipped) state. So, no, not particularly relevant.
The winner of the G1-3 tournament burned down the Steading of the Hill Giant Chief, bypassing almost all treasure, and used
Speak With Dead to get directions to the next round (G2). Do you think that they played G2 at a handicap? Or do you think that they used the G2 pregens, at the same level, and with the same equipment, that everyone else did?
RC