On Saturday night, it was referee Giuseppe Quartarone's overly invasive, pernickety officiating, preventing any flow.
Froch said that, in a way, it was a "perfect performance" from Joshua, who boxed well behind a potent jab throughout, but it wasn't a victory that would have struck fear into heavyweight rival and WBC champion Wilder. Joshua said the fight has to take place in the United Kingdom, something Deontay Wilder hasn't shied away from in the past.
"I was switched on, focused and went 12 rounds".
"That's when you see how serious people are about taking fights".
"It's the same thing always [with Wilder]".
"If I was retiring on this high, I'd be "yes, I'm the man", but I've got to defend these belts again in a few months". "Why do I have to do all this work to have to give someone a bonus".
Joshua's promoter, Eddie Hearn, says a unification fight with Wilder needs to happen in 2018 but does not think the American deserves a 50-50 split.
"Joseph Parker stated this would be war, I stated this would be boxing finesse".
But Joshua and his trainer Rob McCracken prepared for the possibility of a long fight.
"We could've worked on inside more but whatever happened here [with the referee], happened. Everything is learning and you have to come back stronger".
Joshua, nearly a stone lighter than when he beat Carlos Takam in Cardiff last October, did enough without setting the fight alight, while Parker had his moments, even if an upset victory never looked on.
"I want a body on my record, I want one", the WBC holder said.
But he added in his later news conference: "If there was healthy offer [to fight in the U.S.] I will consider that".
"Just look at what we're doing and where we're going".
The unbeaten 28-year-old's run of 20 knockouts was ended by Parker, who justified his reputation for toughness, but Joshua believes he displayed his superior boxing skills over 12 rounds.
Joshua took home a £13 million purse and Parker £7 million. And the fraudulent mandatories on the part of both Joshua and Wilder shouldn't be an issue because boxing fans care about the fighters more than they do the titles.
"It was very important for us when we did close the distance that we were able to work the inside", Barry said.
Asked whether Wilder needed him rather than the other way around, Joshua replied: "With all due respect, yeah". It's way bigger here than in the States - and that's because of us.