In reality the early Seafire MkIIc, like the one in AH, is simply a Spitfire MkVb with a strengthend fuselage and arrester gear. That basically means that the Seafire MkIIc should be a slightly slower, worse climbing and worse turning Spitfire MkVb.
In AH it may have the same flight model as the Spitfire MkVb much like the F4U-1D and F4U-1C have the same flight model.