Zardnaar
Legend
Versatility is power.
One thing that's worth considering is the apparent versatility of a class vs the versatility possible for a single instance of that class.
For instance, the fighter class gets all six fighting styles, while the Paladin class gets 4 and the Ranger only 3. It'd seem that the fighter's greater choice in fighting style makes up for some of the added versatility of those other classes...
...except you don't ever get to change your Fighting Style once you pick it. For a given character, that's no versatility, at all.
There's many other comparisons analogous to that in ranking classes into tiers. That's why, for instance, the 3.x Wizard was ranked above the Sorcerer, because being able to choose your spells each day was more versatile than choosing them at chargen/level up, even given that the Sorcerer got to cast spontaneously, meaning more versatility was retained after slots were expended. (The 5e wizard, BTW, not only retains the 'prepped' advantage in versatility, but combines it with the 3.x sorcerer's spontaneous casting.)
3.5 the wizard knw a lot mnore spells, the spells were more powerful and it was easier to aquire new spells and consumables. That is all different in 5E.
As I said the wizard if I do tier lists will move up to tier 1 eventually but its not such a slam dunk as 3.5. The wizard also has a lot more competition as well now from Bards, Clerics etc who get more features outside of spellcasting.