Everything is possible, who knows that there are many others participants with higher multiplier than yours.
I had an experience in the VIP slot challenge, I had 5,000x at that time and I looked at the previous week result, I thought that I'll be on top 10 but I was wrong since I'm out of the top 10 because there are many others players with more than 5,000x
With this example, there is a chance for you to be out of the top 20 although the chance is small.