A local player has an imperial fleet that seems unbeatable (without getting behind it somehow):
Imperial I Star destroyer with Tarkin, Tractor beams.
3 Victory I Star destroyers with tractor beams
391 points, so he can choose to go first
The strategy is to spam Engineering Commands, with Tarkin giving out Engineering Tokens so he can repair 3 shields or 2 damage cards on each ship every turn, and to Tractor beam anything fast enough to get behind him. With 4 ship activations, he can hold back the Imperial until he can activate last in one turn, then first in the next turn, killing or crippling even a fresh opposing ship. Even with 2 Assault Frigate IIb's ganging up on a Victory, I couldn't kill the Victory because of the repairs.
I imagine a bomber build with carriers, or a swarm of 5 or 6 CR-90 Corvettes could beat him, but would those types of lists be viable in a Tournament?