Did a bit more searching and found this
Estimated quantities of materials contained in a 1000-MW(e) PWR power plant (Technical Report) | OSTI.GOV which evaluates a 1000mw PWR (pressurised water reactor) nuclear power station.
Page 9 has a list of values for various metals.
For a 1000mw it requires 694 tons of copper (there is also brass and bronze listed separately but I haven't included in the following maths)
Hopefully my maths is correct as I am terrible at it.
So per MW a PWR requires - 694/1000 = 0.694 tons per MW
A 3MW wind turbine requires - 4.7/3 = 1.56 tons per mw
so per MW wind turbines require just over half as much as a conventional nuclear power station.
If you look at the list of metals for a PWR you'll also see things like 2080 tons of stainless steel which requires nickel and chromium, 46tons of lead, 18tons of aluminium, 10 tons of Brass, 25 tons of Bronze.
The difference between the 2 being that with wind you need no additional energy/material input once it's created other than maintenance. When it is decommissioned you can re-use the copper. I would guess a smaller amount can be recycled out of a nuclear plant as it will be contaminated or too risky to remove.