If we are going with Seger's more popular and widely known live version, then it crushes any other version.
If we are talking about Seger's studio version vs Metallica's studio cover ... then I'd take the Metallica cover.
Since the first post in the thread is showing the original studio Seger version, I'll assume the latter with studio vs cover and Metallica gets my vote.
(edit: adjusted the poll to give another vote to Metallica, although my name is showing in the Seger line)