Anthony:
You obviously like a good argument. ("No I don’t!" "Yes you do!")
We’re clearly not going to agree on the basic mechanism - sorry, but subjective assessment of how much terrain is served by fast lifts would just lead to endless debates on this forum (joke). But to look a bit more closely at VdI ...
I was quite wrong to say there are "way more" than 17 fast lifts - our count is 18, and that is including Leissieres. I don’t think your argument for its exclusion holds water: we omit the Jordanelles because no holiday skier needs to use it. Not true of Leissieres. In fact, it’s arguable that it should be counted twice, because it functions in both directions ...
We also use a lower figure than 46 as the denominator in our calculation, I see from our database. This would normally be because there are duplicate lifts, or lifts with no skiing on them, like Jordanelles. I’m not able to check right now, but our % of fast lifts ends up at 42%, which gets 4 stars. Interestingly, if you adopt your "terrain assessment" approach I think you would end up with 4 stars too. There’s only one part of VdI where you need to ride slow lifts - the back of Bellevarde, which must amount to less than 20% of the total.
In the case of Deer Valley, it’s conceivable that we haven’t yet counted in the new Lady Morgan chair, which I think will lift the resort into the 5 star category. Reading between the lines, I guess when we edited the book it wasn’t entirely clear that it would be built this year. It has been built, in fact.
Cheers
Chris