Basic physics - specifically Newton's 2nd Law of Motion.

The force acting on an object (like a fist) is equal to mass times velocity. More mass, more force.

Same reason why the damage a vehicle accident causes varies depending on the size of the vehicles involved. Two cars at 30mph is generally survivable. A train hitting a car at 30mph... not so much.

That's a lot of words to simply say, "Yes, that is exactly what you said."

... Is that not what I said?

Most AAA titles are $60 nowadays and have been for some time. Higher priced items come with optional items (aka what you get micro transactions).

I can certainly buy and play the newest Call of Duty for $60. It won't come with a bonus skin or the first season pass of content however.

$60 has been about the go to point for a decade now for AAA titles.

$80 and $120 usually is some kind of premium version that includes optional features and/or has a baked in Season Pass for post launch content. The more expensive versions usually have physical benefits (Statues, art books, and the like).