>>56864565Because Ghetsis' plan was that N would not just win the League while espousing Team Plasma's supposed ideals, but awaken one of Unova's legendary dragons. Zekrom and Reshiram are revered as gods, and only revive for one pure of heart. N was raised specifically to fulfill this purpose, because if one of said dragons sided with him, it would cement that everything N said and did was morally correct.
Ghetsis gets so pissed because you, some random fucking kid from the middle of nowhere, somehow got through N's conditioning, revived the other dragon, and beat him at the zenith hour, flushing everything down the toilet as a result.