The Dems and MSM went after Don Jr for a twenty minute meeting with a Russian woman. Biden is now demanding that a Forgein Government stop and investigation of a company his son works for.
What does he have to hide? did his son do something wrong? or is it because his son is acting as a conduit to himself of foreign money?
The big difference is that Trum and Don Jr said look all you want. Biden says get rid of the (foreign) investigator. Stop investigating.

Some difference in basic approach.