Some skills are just better on the main character and much less or not at all on other characters.
Persuasion and perception on the main character is always king.
I don't know if there has ever been a game where both persuasion and perception weren't the best skills. There is also intimidation but it has always been the less loved brother of persuasion and is in most cases a much worse choice (in 5e both are charisma dependent).
This means that charisma classes are generally better main characters. It's even better if you can have some decent wisdom as well.
This does not change much even if the game supports group checks.
The problem is that even then quite often there are tests in which only your character can take part. For example, in the last pathfinder there were such high tests of both persuasion and perception (there were more of the latter).
