Something I think is underrated about guns:

[Johnie]

You don't often hear folks talkin' 'bout a gun's balance, but my old Ruger just feels right when I hold it up. It sits nice and still, which is way more important to me than how powerful it is.

 

[Alan]

When a gun feels right in hand, it often matters more than raw power.

 

[HD-Ghost]

I think the size of a person's hand and length of fingers has alot to do with a pistol's feel. That may come with familiarity as well.
Knowing a rifle's balance point is also important. When too many accessories are added to a firearm, this too will change the balance.