[fortran]

Comparing r54 and r56:

R54 E/R Cost Cost / ER Cost / Gun
Phoenix: 80 390 4.875 -
Cutlass: 73 340 4.658 -
Beetle 81 325 4.012 46.43
Average Cost/ER: 4.515

R56 E/R Cost Cost / ER Cost / Gun
Wraith: 63 210 3.333 -
Lancer: 73 270 3.699 -
Cutlass: 79 355 4.494 -
Beetle 76 299 3.934 37.37
Average Cost/ER: 3.865

The difference between R54 and R56 average Cost/ER is -14.4% while the difference in Beetle's Cost/Gun is -19.5% making Beetle at least 5% more efficient in R56.

I don't remember if Pegasus as an anti-CO was that important in R54 which could be a handcap not present in R56 to CO fleets making them look like overpower.