Because its more fun to have big swaths of character incompetence and its appropriate for level to mean next to nothing
Hyperbole of course, massively less than in Pathfinder(even more so from the looks of PF2 and 4e and for many things it literally can mean nothing where it used to be of some real impact. You are now no better at evading loss of hit points (ac) at level 20 in your chainmail or plate mail armor than you were at level 1 that feels fundamentally less important.Level means plenty, just not everything.
I disagree... the difference is In the extremes not the baseline... In 5e a 1st level character can have a chance, however small to accomplish some of the objectively hardest tasks in the game world DC 25. In 4e however a 1st level character can't even come close to succeeding at the objectively hardest tasks in the game world... DC 32-42.
EDIT: That's the difference between bounded accuracy and the treadmill.
My longtooth shifter could hit a 38 athletics during shifting and 40 if I had an appropriate common item (A first level character can accomplish the objectively hardest tasks in the world. Give me a 20 stat and yup, I can do the hardest tasks in the world.
Well another difference is 4e's scaling of DC's with PC level.
This is a difference between 4e and 5e D&D, but I don't think it's a relevant one in the context of how DCs are set and how "freeform" that is. In 5e there's a chart. In 4e every time the PCs level up you replace the old chart with a new chart. At the actual moment of adjudication both require choosing a DC from a chart expressed in the language of difficulties.The flattened math from the Bounded Accuracy approach, primarily: Very Hard is DC 25 at Level 1 and Level 30.
Also, the less defined approach as to what counts in each catagory and leaving it entirely up to the DM.
Jumping is a curious example in this context, as the 5e rules lock that in pretty tightly!The crux of the matter is whether "Difficulty" (in most of these games) is correlated to some aspect of the fictional positioning. How difficult is it to Jump 10'? The more closely-defined the DCs are, the more "locked in" the system is to the particular genre it will create.
4e isn't nearly as loose as 5e in this regard, but it does "lock in" the system fairly well with its suites of powers and expectations for those actions. If anything, the complaint about 5e not allowing martials to have nice things, is based on the comparative lack of such specification.
I think this may be table-relative.There are significant problems with the 4e math when it comes to defenses and skills, largely due to the way ability boosts skew the math over time and the monumental difference between untrained, trained, and skill focus.
In 5e a 1st level character can have a chance, however small to accomplish some of the objectively hardest tasks in the game world DC 25. In 4e however a 1st level character can't even come close to succeeding at the objectively hardest tasks in the game world... DC 32-42.
EDIT: That's the difference between bounded accuracy and the treadmill.
A 1st level fighter in 5e has no realistic chance to take down a pit fiend face-to face: the AC of 19 means about 1/3 or so of attacks hit, yielding DPR of around 2 to 3 hp per round. That's around 100 rounds to take down the pit fiend. Each round the pit fiend makes 4 attacks at +14 whose combined damage is 78 hp. If the fighter's AC is 17, that's a 90% hit rate so about 70 DPR.The Level 20 PC can still face down Pit Fiends, while the Level 1 cannot. The Level 20 PC will be capable of plenty the Level 1 is not, but the power curve is manageable now.