Example:
Andromeda's:
Combat Systems:
40 ELS missile tubes
12 PDL 50Mw turrets
12 AP cannons
6 Radiating Counter Measure generators
Fighter and drone support:
76 RA-26 Shrike strike fighters
12 AF/A-29 Phoenix atmospheric attack craft
16 ES-115 Oracle heavy sensor/attack drones
8 ES-14 Janus light sensor/attack drones
Wrath of Achilles':
Combat Systems:
180 ELS missile tubes 
24 PDL 35Mw turrets
4 AP cannons
6 Radiating Counter Measure generators
Fighter and drone support:
32 ES-14 Janus light sensor/attack drones
So you can see in terms of raw firepower, the Wrath of Achilles is
much more powerful, as the only advantage the Andromeda has is it's fighter support which it's effectiveness against such a ship is unknown seeing that IIRC it was never used against it.