Teams are not made of identical people: therefore, balance can only mean being identical and nothing else. What else was this supposed to mean?
Teammates in some card games can have different power: therefore, balance can only mean uniformity and nothing else. What else was this example supposed to mean?
Ok thank you, you took that out of context. My point was on teams - say a Football team, you have positions where ahtletics are the most important thing and positions that are more cerebral, some are the "glory" positions, some are leadership position and some supporting positions. These are not balanced, either at the player or the position level. A receiver or a runningback is just more important in modern American Football than a Fullback is. Most Runningbacks and Tight Ends in the NFL can (and often do) play Fullback. Few pure Fullbacks can play tailback or tight end effectively. An Offensive Lineman, while arguably being just as important as a QB is not going to get the glory or recognition a QB will get.
The positions are just are not equal or balanced. Yet all players on the team cooperate to achieve the team goals and everyone contributes.
This is the same in modern D&D, putting characters like Fighters and Monks in supporting roles on the team with Wizards and sometimes Clerics that are going to be the power on the team and get the glory.
Here you explicitly use the word "parity." What else could you mean here, other than that being balanced must mean being uniform and identical?
I did not mean exactly equal, and neither does the word "parity". Parity is a synonym for balance. They mean the same thing in this context.
There are weaker positions and stronger positions in team sports, in team card games and in D&D partys. A Fighter or a Monk is not as strong a class as a Wizard. It just isn't.
As for the rest of the points, player skill is a wholly separate consideration--and I absolutely, fundamentally disagree with your core assertion. No amount of player skill is going to let a Fighter player rewrite in-game reality. Unless you can show some other way for Fighter players to perform feats that affect the game world to a degree similar to casting wish? I would absolutely love to hear it--that would be a conclusive slam-dunk against casters being grossly overpowered!
To cast Wish an inexperienced player needs to get to 17th level, get Wish in his spellbook and understand the dynamics for casting it and he has to realize he needs to get 60 feet away from Vecna so it doesn't get counterspelled. None of those things are gauranteed, or even likely for a noob player. RAW a player who starts at level 1 will no longer be inexperienced by level 17.
That same noob player when he is second level is going to forget to cast shield (if he even took shield as a spell) when the Hobgoblin cuts him down after he ran to the front to stab him with his dagger .... or he is going to cast Charm Person on a Skeleton. Meanwhile the savvy fighter is going to recognize the danger the Hobgoblin poses and either shove or grapple the Wizard and move him out of the way. The Savvy Fighter is going to drop his Sword and pull his back-up weapon - a Flail or Warhammer to beat the skeleton because he is vulnerable to bludgeoning damage and he understands damage types.
Unless you can show me a an example of a newbie playing a Wizard actually outplaying a vetran playing a Fighter I am not going to agree with your claim. There are thousands of examples of games online, find just one where this is happening and I will be satisfied.
Also I will point out that you can have someone who swings a sword and also casts Wish in the current game. The Bladesinger does that quite well, so that thematic option is available and with feats and races you can build that out largely however you want. It just doesn't have "fighter" written on the top. Since the Wizard already has this theme covered, I don't really see the need to give a Wish option to a fighter as well.
If it really is important the DM can certainly fix this with magic items. Something like a ring of Wishes or a Luckblade can get a fighter the ability to cast Wish without messing up the class at all. If this is necessary it is as easy as making the magic item available and making sure the fighter gets it when the party gets to 17th level.
And I'm saying it's both wrong-headed and actively bad for the game to outright punish players who like Fighters by enforcing that their characters MUST be weak, and likewise to reward players simply because they like playing Wizards.
No it isn't. The player chose a weak class on purpose. It is punishing them to enable and thereby have the rest of the party expect them to contribute as much as the Quaterback (ie the Wizard) when they purposely chose a class that is a support class.
It is bad to put the fighter player into a position where he is expected to save the party with a Wish spell, because that is not his role and players who take that class do not intend to be in that role.
up above you pointed this out - Fighters don't have Wish. Are you suggesting they should have Wish or the ability to alter reality in a similar fashion?
Because that's what actually happens in practice. Repeatedly.
Maybe in some games but certainly not in others and not in any I have played in personally.