I know that if you don't have a MAD, then you don't need to fly those gut-wrenching cloverleafs (or vomit inducing MAD compensation runs), but isn't a MAD still a useful secondary sensor?
The USN isn't emphasizing magnetic anomaly detection for the P-8's. It could be that shining a laser of a certain blue-green wavelength into the water does as well or better than MAD at detecting submerged objects. It could be that the platform doesn't have to descend to very low altitude to operate the laser system, or to visually examine the sea using platform stabilized, telescopic optical devices.
And don't the Nimrods and P-3s pull more than 2.2 g? And don't they go below 250 ft to prosecute an ASW attack?
Unlikely.
Young man, it isn't the 1940's anymore. There aren't going to be Liberators making strafing passes with 50 cal. guns. And where did your 2.2g requirement come from in regard to ASW aircraft? I doubt if B-24's were good for 2.2g pull-ups.
Nowadays, ASW aircraft doen't have to descend to altitudes anywhere near that low to launch acoustic homing torpedos or precision-guided air-to-surface munitions.