Are there recorded instances of Me-262s attacking A-26s? If so I suspect they were few and far between.
A-26 entered combat so late in WWII that flak was probably the primary threat and remained the primary threat during Korea and Vietnam. Hence my question about crew protection against ground fire.
For that matter Soviet AA fire probably killed more Ju-88 dive bombers (i.e. not counting recon, weather aircraft, night fighters etc.) then any other weapon system.