She did not do "essentially the same thing" for multiple reasons.

• The emails you're referring to were not classified and went through proper process to get permission to be removed.
• Hillary has already been investigated and cleared, including investigations conducted by the Trump administration.
• Trump was given multiple opportunities to return documents. He kept lying and keeping things even after saying they'd returned everything. There are still classified docs that haven't been found!
• The nature of the material is orders of magnitude different. Nothing that Hillary has been accused of destroying or storing improperly, even if those accusations were all true, even begins to compare to the sensitivity and importance of the kind of information Trump was hoarding.
• In addition to simply possessing the material he shouldn't and refusing to give it back, he also breached security by showing sensitive information to people that weren't allowed and, just at a practical level, has no reasonable need to see it in the first place.