Yeah, running up against a fleet of Legendaries would have been trouble, but I had a minimum maintenance race, with over 2/3rds of my fleet in mothballs, so I could easily replace my 10-FG/DS WP patrol with a 50-LC/BC annihilator force for a few turns
Also, that was 1% at point blank, so moving to max torpedo range (6) would cancel the 50% legendary bonus