We have not published a speedtest summary for a long time, and when we used to we used to spend a week sifting through the data to do things like assess upstream speeds as a guide to a users product.
Thus the change in the listing will not affect anything.
Where people have elected to share their results they are plotted on maps.thinkbroadband.com where the actual test data with no package information is published. We have found that a good many people don't understand the package they are on.
Virgin Media is adjusting everyones speeds over the next few months, so you will change your speed again. The listbox reflects these options I believe.