Agreed, though, all crits are always single foe dependent and in this case, “foe is stunned, no parry” would beg the question of whom you’d be parrying when having a wide open target to assault 110%!
Not to besmirch our beloved ruleset, but misprints would be copied ad infinitum - even into RMSS, then RMFRP...
Misprint that just kept getting through, is my bet.