What aircraft allows you to pitch for 5-9 neg-G's? Aircraft are designed for higher positive G loading than negative G loading. A high neg-G load will probably rip the wings off before it hurts the pilot. As you point out yourself momentary G loads are tolerated better by people then sustained G loads and the push/pull level 'S' or pitchup/bunt only requires momentary neg-G loads. Any damage to the pilot is undoubtedly preferable to getting shot down. Neg-G evasives aren't theoretical they're in the historical record and as far as I know don't require 4 neg-G's to be effective.
--)-FLS----
Musketeers