It is not just shifted source, its completely different build, with different skills and equipment.
Then there is, of course, monks who gain "The ability to dodge" the more wisdom and dexterity they have so long as they remain unarmored.
There is also Duelist who has the ability to gain extra armor... err "ability to dodge" equal to their intelligence bonus and dexterity bonus so long as they are in light armor (and to a limit of their armor allowance)
Then there are normal people who get a "abiltiy to dodge" according to their dexterity bonus to a limit to their armor allowance.
Yada yada, it all goes back to the same source. That is how they did it.
That is why a "Dodge tank" in Divinity OS 2... would be DRASTICALLY different then in dungeons and dragons.
Dungeons and dragons just shifted the source of your armor around... So... instead of say...
Platemail: 9ac, 2dex... so 11...
You had a monk who might have 4 dex, 4 wisdom: so 8
Or a Duelist who had: 4 armor, 4 int, 4 dex: so 12
