"Top 100 universities at doing what?"
The list is endless, visit their websites, look up all the teachers and programs they have going. Now research those and you will see how deep the rabbit hole goes.
Top university implies that these schools have a large hub of academic progress, it might not be in a tangible form but the stuff they do at those universities does make a difference.
These schools get a lot of bad press because the big players of the world seem to come from them, but it does not diminish the contribution these higher education universities have added to the global community.