İn every aspect?
She is better with her elemental techniques; her fuuton skills > Zabuza's suiton.
He has some CQC abilities over and that's that; she is also physically strong enough to wield a gigantic metal fan and blocked a weighted Lee's kick back in part 1, so she is not awful in this area.
At intelligence and elemental usage; Temari is superior.
At CQC; Zabuza is superior.
I just see both around the same level. That's just my opinion though.
Look at the data book, seriously.
Zabuza's Ninjutsu is actually better than Temari's, according to Kishi's word in the data book.
His Taijutsu far outclasses Temari's. Temari's Taijutsu is the same as EP1 Sasuke who got destroyed by a Water Clone that has 1/10 of Zabuza's real power. If Zabuza got close he would annihilate her.
His Genjutsu defense far outclasses hers as well.
His strength, speed, stamina, hand seals, experience, indurance, and even hype outclasses Temari.
Zabuza: Former Legendary Swordsman of the Mist member. He was the leader of the Hidden Mist's Assassination Unit and was also an Anbu. He murdered over 100 Genin as a child when he wasn't even in the academy. He broke through the Hidden Mist's offenses and defenses and fought the Mizukage who was actually Obito and STILL survived. He was feared among the whole Narutoverse as the Demon of the Hidden Mist.
Has the best Silent Killing in history, excellent Kenjutsu, Suiton, great defense to Genjutsu, and comparable feats such as speed, strength, stamina, and hand seals to the Akatsuki and the Sannin.
Temari: Fuuton user
Zabuza's clearly in another league, which is low kage and she's high jounin