With the above post in mind, I propose the following for both Escort Carriers AND Naval Fighters.  Also, with Naval fighters being slightly weaker than their land-based counterparts, I propose that the regular aircraft carrier’s IPC cost be slightly tweaked.
Regular Aircraft Carrier
1    Attack
2    Defense
2    Movement points
11    IPC cost (Cost is lowered to 10 IPCs with the Advanced Shipyard technology.)
–    May  hold up to 2 naval fighters.
Escort Carrier
1    Attack
1    Defense
2    Movement points
7    IPC cost (Cost is lowered to 6 IPCs with the Advanced Shipyard technology.)
-    May only hold up to 1 naval fighter.
Naval Fighter
2    Attack (May be upgraded to 3 Attack with the Jet Fighter technology.)
3    Defense
3    Movement points (May be upgraded to 5 movement points with the Long Range technology.)
8    IPC cost (Cost is lowered to 7 IPCs with the Advanced Shipyard technology.)
–    Only naval fighters may operate from carriers, but naval fighters MAY be used on land.
Regular Aircraft Carrier + 2  naval fighters
5    Combined attack value
8    Combined defense value
3    hits
27  IPC cost
–    Up to 2 naval fighters may be on the regular cv.
Escort Carrier + 1 naval fighter
3    Combined attack value
4    Combined defense value
2    hits
15  IPC cost
–    Up to 2 naval fighters may be on the regular cv.
These stats seem to fit a little better into the naval chart.