The trial hasn’t happened yet and Trump and other key officials have not testified yet. So when we compare Bill Clinton’s perjury to what Trump’s been accused of, we’re comparing apples to oranges.
What Trump’s been accused of is spelled out in plenty of detail here (the full House impeachment report released two weeks ago): https://docs.house.gov/billsthisweek/20191216/CRPT-116hrpt346.pdf