Some bands have never topped their live albums. The additional adrenaline rush, familiarity with the material, often added speed (both varieties) and frequent studio ‘improvements’ have yielded live albums that widdle all over the studio equivalents from a great height.
Here are a few artists that, for me, never topped their main live album:
Hendrix (it’s a compilation, but The Jimi Hendrix Concerts is my go-to Hendrix album)
and Van gets pretty close. Any others? Or am I somehow mistaken?!