You may have missed the fact that things have changed somewhat under the current administration. Right or wrong, the decisions made are very unpredictable. I'm saying we can't assume what punishment was levied in the past will be the punishment levied under this administration.
Assault and sexual assault are different when involving two students. You have a second party with standing that can appeal a lower decision that the president must account for. This won't likely land on Leath's desk. He may ask they handle offenses this weekend more strictly but due process still must be followed.