I select plants that over 20 bud counts and hope for the best. Bud count will vary depending on your climate, watering routines, fertilizer routines, etc. Some counts are inflated and we just have to wait to see what the cultivar will do for us. Even if the daylily you are looking at is hybridized in the same county or the same area as yours, there are no promises that they will perform for you as they do for the hybridizer. That's why comments in the data base are good, they may give you an idea of what to expect.
Yes, bud counts do matter!