DDS1 bonus final boss is fantastic, if only for who it is!
I can't comment for DS2's bonus boss, since it really depends on how far you grinded up. For example, in SMT Nocturne, final boss can range from 90 minutes (barely winning the fight) to 10 minutes (highest level, completely prepared) because you can normally finish the game at around level 75. It depends on DS2's leveling system. But even if you're max level, two turns is just disappointing.
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