Why 100 000?

I just don’t understand why this waterless urinal is labelled as saving “up to” 100000 litres of water a year. It rather seems a cop out. Perhaps they should have used the term “on average”? But then, perhaps some of the McDonalds clientele wouldn’t understand the use of the term “on” let alone the incredibly difficult word “average”. Why not just write the following:

This waterless urinal saves up to 1000000 litres of water per year and may be responsible for the saving of the whales and arctic ice sheet

My use of the words “up to” and “may” allow me to write whatever the hell I want. I prefer my version.