I mean, you keep arguing with me but you're just proving my point. I agree with you that panther isn't good at damage. Even wolf is better than it. But the reason for that is because panther is a dex attacker and only has +2 to its rolls. Wolf uses strength and has +3 and is obtained 4 levels earlier.
You can drink a cloud giant elixir and panther would still have +2 while wolf would have +8. It's a bit ridiculous. Wolf's pack tactics isn't even needed for it to be better than panther.
What I really disagree with you on is that you think panther is fine because it can turn invisible. It is my opinion that if I use my valuable wildshape charges to turn into a panther, it should also be viable in combat on its own. Owlbear is incredibly powerful on its own, especially for the level its learned. Why is it okay for panther, which is learned at that same level, to be worse than a level 2 form like wolf?