Ever wonder how much Damage do you dish out?

[AandA]

Each PC will do a different amount of overkill damage to each individual creature.

Oh, right. Good point.

Joe Orc has 1,000hp

bobby PC kills him the last hit doing 15dmg
bobby has done between 1,001~1,014

Pantera PC kills him the last hit doing 400dmg
Pandara has done between 1,0001 ~ 1,399

Hah! I didn't even read through this last part and was just going to cut it out then noticed you'd given Pantera as an example.
That's about right for her though. Fully self-buffed, she has hit for over 400 a few times. With a bard and better casters than her low level divine wands, she might be able to approach 500 maybe?