Part of the abstract from the paper The Rank Length Effect:

The same ranked items elicit more positive judgments when the rank length is longer (vs. shorter), although the differences in judgments between the ranked items are smaller. This effect is driven both by consumers’ tendency to narrowly focus on the rank list and by the manner in which they map the rank list onto their mental number line. The rank length effect extends to willingness to pay, and choice.

Translation: ranking well is more impressive if the list is longer (Top 25 vs Top 10).

Performance PR professionals take note.