Just do the math. When it's stripped down for a 27LY range jump, the Diamondback is no faster at getting around the bubble than any other stripped down ship with a +20LY range.
Diamondback with 27 LY jump range: 10s witch space loading screen + 16s refuel timer = 26s per jump
FdL with 20LY jump range: 10s witch space loading screen + 10s FSD cooldown = 20s per jump
Cobra with 25LY jump range: 10s witch space loading screen + 10s FSD cooldown = 20s per jump
Jumping 50 LY:
DB: 2 jump = 52s
FdL: 3 jumps = 60s
Cobra: 2 jumps = 40s
Jumping 100 LY:
DB: 4 jumps = 104s
FdL: 5 jumps = 100s
Cobra: 4 jumps = 80s
Jumping 200 LY:
DB: 8 jumps = 208s
FdL: 10 jumps = 200s
Cobra: 8 jumps = 160s
Jumping 1,000 LY
DB: ~37 Jumps = 16 mins
FdL: ~50 Jumps = 17 mins
Cobra: ~40 Jumps = 13 mins
Jumping 25,000 LY (ideally with no hiccups bathroom breaks, brown dwarfs, or scans)
DB: ~7hrs
FdL: ~7hrs
Cobra:~5.5hrs
The more you run into brown dwarfs and other unscoopable stars, the worse it gets for DB because the longer scoop time overruns the FSD cooldown by a larger amount.
So now we see that the DB is no better than the FdL at exploration. Worse actually because you see about 80% of the systems in the same about of time and spend that time fuel scooping instead. The FdL is a notoriously slow ship for getting around the bubble, and FdL pilots have been crying for months for a buff to jump range. Little did they know that they are in fact "combat-explorers" with class 5 fuel scoops.
