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.