"What do I put that down to? Well me and Kev are still learning in camp and we saw a few things we did wrong in camp. So each camp we are making adjustments that we know will work a lot better. So if they are judging me on that fight, that's good, because I'm a different fighter altogether."
Barry said: "I hope they watch that fight over and over again because you all know what I think of the Takam fight."
The training camp wrinkles have been ironed out. Parker, 24, knows he is suited to a shorter camp, and there have been further positive developments in terms of his employing mental skills guru Ceri Evans, a man credited with helping the All Blacks to their two recent World Cup successes, and a new strength and conditioning trainer at Parker's Las Vegas base.
"I did more weight training for Dimitrenko - we saw the big difference in sparring, everything felt stronger, it felt like the movement was much better, we were able to execute the plan in the Dimitrenko fight," Parker said.
"[We've been] trying different things. The whole body feels stronger. I think with this you are going to see a little step up from the Dimitrenko fight.
"I think [new training] has helped my speed and movement. I put on a little bit of weight, but I believe it was muscle."
Ruiz, a fast and durable 29-year-old, possesses more attacking weapons than the tough Takam, and Parker's new power and movement is likely to be crucial to his success.
"I'll go on record as saying that Andy Ruiz is a much better fighter than Carlos Takam," Barry said. "Andy Ruiz is a much bigger risk and a much more dangerous opponent than Carlos Takam and if the same Joseph Parker turns up that fought Carlos Takam we lose, simple as that."