Nuclear Bombardment....is this WAD?

[Q-Ball]

Howdy! In my ongoing PBEM, I ordered a bombardment of Lamiaco; this is an airbase just east of Bilbao, 2 hexes off the water (I finally figured out how to order a TF to one hex, and have it bombard a different hex inland). I have no problem with Naval ships reaching 5 miles inland to bombard something, particularly since 11in guns have an effective range greater than 5 miles.

I set the 2 German CAs (Admiral Scheer and Deutschland) on Bombard and this is the result:

TF 12 bombarding at 102, 56 Lamiaco - 04:00

No Nationalist Aircraft losses:

Republican Aircraft losses:
I-15 Chatos: 10 destroyed, 4 damaged
I-16 typ5 Mosca: 21 destroyed, 12 damaged

Defender losses: 102 Casualties
Squads lost: 14 disabled, 3 destroyed
Vehicles lost: 3 disabled, 0 destroyed
Guns lost: 0 disabled, 0 destroyed
Units Destroyed: 0

Airbase Hits: 323
Supply destroyed: 4525
Fuel destroyed: 9
-------------------------------------
TF 12 bombarding at 102, 56 Lamiaco - 05:00

Defender losses: 421 Casualties
Squads lost: 18 disabled, 8 destroyed
Vehicles lost: 108 disabled, 26 destroyed
Guns lost: 0 disabled, 0 destroyed
Units Destroyed: 0

Airbase Hits: 2683
Supply destroyed: 2667
Fuel destroyed: 216
He 60 D acting as a spotter for CA Admiral Scheer

The airbase was 80% damaged, and pretty much all the planes are destroyed; 39 losses are reported, that's 3 12-plane squadrons up in smoke. Worse, I'm not sure he can move them (Bilbao is cut-off from the rest of Spain)

Is this WAD? Or is this bombardment too powerful of an airbase?

Bombarding ground units doesn't produce this kind of result