"I think the horse has done most of the talking," Harley said.
"He's taken a big step forward each run and that's what the good ones do.
"To transform from a Heavy 10 to a Good 4 there today, which I knew he would handle, I never had any doubt in that.
"I just watched the previous races, and I trusted my horse to pick up, but nothing had been making up bundles of ground, so I wanted to try and be that pair or two closer today.
"We got a lovely spot, a good rhythm, and I ended up getting there too soon but he's got a good will to win, and he wanted it."
The victory was a Group 1 first for father-and-son training partners Chris and Corey Munce.
Chris needs no introduction having been a successful jockey including winning the Melbourne Cup before turning his hand to training.
Corey joined his father in a training partnership this season and the pair had bagged 64 winners prior to Saturday's victory.
"I'm a little speechless, as you'd probably expect, but I'll try and keep it together," Corey Munce said.
"I felt very comfortable throughout the run.
"I said (during the race) we're right here, and if he's good enough he can win.
"That was a bit of the worry, as he'd come from a long way back the other day from an awkward draw and we were just hoping from a slightly better draw he would be that touch closer, and it worked out beautifully today."
