That was evident on Sunday.
The New Zealand team were a bit fast and loose at times, sometimes cavalier in their approach, especially in the 15 minutes before halftime.
They had the chance to exert real pressure on the home team, but kept leaving the door ajar, particularly when they failed to complete their sets.
England were fortunate at times, and helped by several questionable calls, but also defended mightily.
It was almost the `rope a dope' strategy applied to league; they absorbed everything the Kiwis could throw at them, then finished the stronger.
It was a harsh lesson.
There was no lack of effort or commitment from the Kiwis, and the forwards gave as good as they got.
But as a group they failed to seize crucial moments, and also learned – the hard way – that England always finish strong on home soil, especially when the crowd come to life.
"It comes down to execution, sticking with our gameplan," said Kiwis prop Martin Taupau. "We wanted to apply as much pressure as we could. We did that in patches, but we took our foot off the pedal at some points."
The Kiwis were a little naive at time, and as Maguire reflected, overdid the option of running on the last tackle.
It worked as a surprise tactic against the Kangaroos at Mt Smart, but became predictable in Hull.
This was epitomised with three minutes to go in the first half, when the Kiwis tried to manufacture something on the last tackle, just past halfway, instead of pinning England in the corner.
That set up an opportunity for the home side, which ultimately led to the controversial penalty try on the stroke of halftime.
"I thought in the first half we ran it on the last a few times when we could've kicked it long," Maguire said.
"From a game point of view, we need to get better at that. It was there to take for both teams and they applied a but more pressure than what we did."
Shaun Johnson kicked the Kiwis into the lead with 15 minutes to play, but the New Zealand team couldn't see it out.
"To me it's about how we respond," said Maguire. "Who walks out on that field with a New Zealand jersey on, there's an expectation and this group is building. It doesn't matter how old or young you are."
"I don't think it is a massive fix for us, added Taupau. "It all comes down to individuals and fine tuning."