The New Zealanders have probably had plenty of more testing training sessions, but worked their bench and did the basics well enough to clock up a satisfyingly big win.
New Zealand coach Ruth Aitken again gave all her 12-strong squad a run, Irene van Dyk and Anna Thompson taking charge in the shooting circle while Laura Langman, Temepara George and Joline Henry ran the midcourt with ruthless efficiency.
Casey Williams and Katrina Grant were equally merciless at the back, benefiting from full-court pressure on the Welsh pass in to snaffle up a wealth of turnover ball.
The Silver Ferns terrorised a tentative Welsh outfit right from the first whistle, racking up a humiliating 28-2 lead by the end of the first quarter.
Time and again the Welsh midcourt were forced into lofting the long ball into the circle, providing Williams and Grant with a succession of bread-and-butter intercepts.
Aitken subbed Thompson at the break, giving Paula Griffin a run at goal attack, while Anna Scarlett came on to again stretch her legs at wing defence.
Wales managed to notch up five hard-won goals over the second stanza as the Silver Ferns maintained momentum to lead 50-7 at the halftime break.
Shooting at 96 percent accuracy to Wales' 54 percent, the Silver Ferns controlled every aspect of the first 30 minutes, leaving Aitken the freedom of running another different line in the third quarter.
Liana Leota came on at centre while the versatile Thompson moved to wing attack; Leana de Bruin replaced Williams at goal defence and Joline Henry reclaimed the wing defence bib.
And pivotal goal attack Maria Tutaia, who was subbed off early in the second quarter of yesterday's match against Fiji, returned to test her injured foot.
The quarter was Wales' best by far, but although the Silver Ferns' timing was a little off, they looked solid enough in taking the spell 17-7 to lead 67-14 with 15 minutes remaining.
The score mounted as the match wound down, the Welsh continuing to run hard to little avail as the Silver Ferns closed out the final quarter 24-7 for the 70-goal win.
New Zealand and Wales have met 12 times over the past 48 years, with the Silver Ferns winning comprehensively on each occasion. The closest Wales have managed was a 33-goal loss at the 1979 world championship, while the last time the two teams met -- at the 2007 world championship in Auckland -- New Zealand pounded the Welsh 86-24.
New Zealand yesterday opened their world title tilt with an initially patchy 80-26 win over Fiji, and complete pool play tomorrow when they meet Trinidad and Tobago who downed Wales 51-48 in a closely fought match on Monday.
Quarterfinals begin on Thursday.
