This is the official smogon description:
If the wielder is the target of an attack, all of the attacker's Attack, Special Attack, and accuracy stat stages are ignored during damage calculation and accuracy checks. If the wielder is attacking, all of the defender's Defense, Special Defense, and evasion stat stages are ignored during damage calculation and accuracy checks. If the wielder uses
Punishment or the opposing Pokemon uses
Stored Power, stat boosts still factor into its power. If the wielder hits itself in its confusion, its altered Attack and Defense stats are kept during damage calculation.
So I would say No. Also the curse unaware quagsire set would not make much sense then.