Career OPS+ when one player is going into year 10 and one into year 6 is not really relevant.
Markakis's last season with a OPS+ over 110 and 140 games or more played was Jason's rookie season. Markakis being a fantastic hitter in 2008 doesn't play much into his 2015 performance. Nor does Jason's 2010 performance.
The number of seasons played is irrelevant since that stat is an AVERAGE.
"Don't tell me the sky's the limit when there are footprints on the moon"