The Kiwi's win over their main group rivals has secured their passage through to the quarter-finals.
"It was a very pleasing performance," said Henry. "There were some good tries.
"We finished pretty well at times and put some good things together. It's good to have a decent hit out against some decent opposition.
"It was a step up in opposition, a step up in intensity and, for most of the game, we played pretty well."
Hosts New Zealand are likely to face either Scotland or Argentina in the next round.