L30 Brute (Tarrasque) Attacks: 34 vs AC, 32 vs Fortitude, 33 vs Reflex.
L30 Rogue (my build) Defences: 43 AC, 34 Fortitude, 44 Reflex.
I generally see that at all levels it's supposed to be a 50/50 chance of hitting each other's AC, and one of the defences is a weak spot.
The trick is to be...