Does sorting by popularity still work as expected?

[s-h-a-d-o-w]

I'm pretty sure that ever since I can remember, popularity equaled weekly downloads? Yet, looking at this: https://www.npmjs.com/search?ranking=popularity&q=css%20reset

... the results are:

1. 6,072,580
2. 347,873
3. 195,892
4. 575,247
5. 88,947
6. 339,281

(Although I don't rule out that it's always been like this and I just never noticed for some reason, even though I always check weekly downloads during decision making.)