Actually, the program does do sneak attack and elemental/burst. Burst is never as interesting as two elemental attacks.
6th level rogue, 18 strength(!), +1 longsword, +1 shortsword, focus, focus, ambidexterity, two-weapon fighting, +4d6 sneak attack =
ac 15: 31.9
ac 20: 20.5
ac 25: 9.1
Not...