"It wasn't decisive, but it was a fair result."
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It's no secret, many boxing fans wanted Parker to finish Ruiz off for a decisive win, but Arum doesn't think that was plausible to begin with.
"You can't own Andy Ruiz," he said. "If he had traded with Andy Ruiz for 12 rounds, I don't think he would have come out on top."
And after a very tough fight, Arum thinks Ruiz deserves a rematch from Parker.
"I think down the road, a rematch would be appropriate, it would be huge.
"But they should each fight someone else in the interim."
Arum also wanted to dispel any notions that the WBO wasn't a genuine title to fight for.
"The WBO is perhaps the leading boxing organisations," he said.
"For me, the WBO is worth more than the other three belts.
"I think Parker stacks up against the champions of these other organisations - I think he's the real goods.
"I think as the years go on, I think he'll be the undisputed champion. Heavyweights really don't reach their prime until they are in their 30s."