James Gasik
We don't talk about Pun-Pun
At least with 3.x, the xp you got from encounters was directly based on your level, so that you could in fact "catch up" (this is why item creation wasn't that big of a deal as most thought it was).
In AD&D, the differences between levels is very slight, which is why multiclass characters are so strong at higher levels, when you could be a Wizard (or M-U) 10 and someone else could be a Fighter 9/Wizard 9, because typically the xp to go up a level (most of the time, there were somewhat random shifts at certain levels) was equal to all the xp you've earned to this point. Also, a level of class A is not equal to a level of class B- compare and contrast the abilities of a Fighter 5 vs. a Thief 7 as an example.
Expanding on GrimCo's point: a thing with 5e is that the difference between levels varies depending on what stage of the game you're in. At low levels, you get new abilities all the time, and you notice the hp bumps more readily. By the higher levels, you have many dead levels (unless you're a spellcaster) where not a lot happens, and once you have 80 hit points, another 6 or 7 isn't as big a deal as it was back when you had 20.
-Curiously, this is a big reason why I see a lot of multiclassing after levels 5-7 for several classes: when you realize it might be 5-6 levels before you get anything interesting from your class, and that there's another class that's going to give you new abilities right over there...it's really tempting!
In AD&D, the differences between levels is very slight, which is why multiclass characters are so strong at higher levels, when you could be a Wizard (or M-U) 10 and someone else could be a Fighter 9/Wizard 9, because typically the xp to go up a level (most of the time, there were somewhat random shifts at certain levels) was equal to all the xp you've earned to this point. Also, a level of class A is not equal to a level of class B- compare and contrast the abilities of a Fighter 5 vs. a Thief 7 as an example.
Expanding on GrimCo's point: a thing with 5e is that the difference between levels varies depending on what stage of the game you're in. At low levels, you get new abilities all the time, and you notice the hp bumps more readily. By the higher levels, you have many dead levels (unless you're a spellcaster) where not a lot happens, and once you have 80 hit points, another 6 or 7 isn't as big a deal as it was back when you had 20.
-Curiously, this is a big reason why I see a lot of multiclassing after levels 5-7 for several classes: when you realize it might be 5-6 levels before you get anything interesting from your class, and that there's another class that's going to give you new abilities right over there...it's really tempting!