Setrin: I am going to use Thorough Assessment.  He gets 4 successes, 2 advantages, 1 triumph.   That triumph adds 4 more successes. so giving 8 successes to your chair throw. and 2 blue dice.
Gate: I Throw this chair to destroy the Battle droid. Rolls THAT!!!!!!!!!!!!!!!!

The end result is basically 20 damage (which is about the damage scale of a thermal Nuke in Star Wars)

Tim: You throw that Chair and it bounces off and you walk over and start bashing it with the chair until it explodes!