TF2 isn't cartoonish in the sense that your playing with bugs bunny and daffy duck.
This has gore and violence, you explode when a soldier hits you with a critical rocket for 300 damage, you go flying in a steam of blood as a spy stabs you in the back.
If anything, THIS IS SPARTA!
But in seriousness this is a great game with excellent graphics, my rig runs it at 40-50 fps most things full with AA.