Nononono - an Macross Cannon shot is not measurable in any known unit. Put simply, it is an Omega Class Weapon, meaning that anything smaller than a decent sized planetoid will be vaporized upon impact. As in Game Over, Thank You For Playing 
Any comparison to other non-Omega Class Weapon is simply moot. And comparisons between Omega Class Weapons mostly involve which one looks cooler...
Just my $0.02
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Drunkard's Walk Forum Moderator and Prereader At Large
Any comparison to other non-Omega Class Weapon is simply moot. And comparisons between Omega Class Weapons mostly involve which one looks cooler...
Just my $0.02
Offsides
Drunkard's Walk Forum Moderator and Prereader At Large