Lucario had his Mega form, which greatly amps up his speed and attack power. He is easily one of the strongest non-Legendary Pokemon out there, but that being said, it will be tough for him to keep up with Ulquiorra. Ulquiorra was one of the strongest Espada members in Bleach and he reached DBZ levels of power. He could end the fight in the blink of an eye. His two super forms guarantee this. Ulquiorra wins.