When comparing both technologies impact on the national grid, a LFTR based power grid would be a simple affair. As LFTR reactors can be scaled from 1MW to 1GW output, they would be located close to where power is consumed, such as cities or apart of factories. New Zealand would save in terms of not having to invest heavily in national grid 
upgrades. LFTR can increase or decrease power in real time to meet changing demand, offering reliability to meet peek demand periods. Whether its seasonal heating or cooling, LFTRs can be counted on to deliver power.
In contrast, wind power suffers from the major logistical obstacle of intermittent generation. To counter this problem, hundreds if not thousands of wind farm installations would need to be produced to produce statistical confidence in reliability. This adds to costs in purchasing, maintenance, staffing, and national grid upgrades. Using wind power entails enlarging the national grid as energy sources are far from where power is consumption, and where people want them. Added further is reality of loosing around 10% of energy when distributed over the energy grid.