If I recall correctly from Derby seminars past, a horse with 5 weeks or more rest has a better chance of running a new top in the Derby than horses with 4 weeks or less. If Firing Line did indeed run a 1.5 or better (no ground loss), then you could make a case that this guy can make a jump to a 0 or better in the Derby.

However, that Line of David-Hold for Gold cross doesn't lend much confidence to those thinking he'll stay the entire 10 furlong journey.