However, the day belonged to jockey Craig Grylls and the horse under the tutelage of O'Sullivan/Scott who returned from Hong Kong with "little or no expectations".
"It's a great thrill," retired jockey great O'Sullivan said.
"To get him back and won a group one is just a wonderful thrill," he said.
It was also a magical moment for Grylls whose father, retired Gary Grylls, won the classic on Love Dance in 1996.
Group 2 Sacred Falls HB Guineas-winning Ruakaka co-trainers Donna Logan and Chris Gibbs were back in the Birdcage when their 5-year-old brown gelding, Hasselhoof (Matthew Cameron), got third place a length behind Humidor in the classic.
Tauranga trainer Stuart Manning's El Pescado (Cameron Lammas) came in next 2.3 lengths behind Hasselhoof while Maungatautari husband/wife co-trainers Steven Ramsay and Julia Ritchie had to settle for fifth place with Rasa Lila (Leith Innes), a further 2.7 lengths adrift.