Best DPS class in the game?

[EasymodeX]

Humm, you're putting a lot of emphasis on the procs. Bloodletter is not relevant in the "procs are harder" capacity since it's automatically used off the GCD on macro. E.g. a proc you pay no attention to does not add any difficulty. Straighter Shot is the only Bard proc worth mentioning in that context, and it's a low frequency proc. I doubt there would be a significant difference between a modeled / perfect-simulated / imperfect-simulated execution of SS procs.

BLM Firestarter has a much higher chance to proc, so it interferes much more often (note: I'm a bit dubious that using a SS proc off its normal cycle is even worth it at all due to the Straighter Shot proc rate ... but that's a simulation exercise).

Edit: As a sidenote in your assessment: BLMs have a deficit for reacting to mechanics due to their cast times. This is why a BLM is harder to play than a Bard in a general execution sense, although the BRD gets bonus "silence or wipe" responsibility, so it could be considered "harder" in that sense.