Comparing Cruz's slash line + 33 HRs + 80 RBI (and still a month left to play) to Thome's 2010 numbers...it doesn't really seem close at all in my opinion
Home runs and power are going at a discounted rate in 2019.
2019 Cruz OPS+: 171
2010 Thome OPS+: 182
Fangraphs has a similar take:
2019 Cruz wRC+: 169
2010 Thome wRC+: 177
Though Thome had a shortened season in 2010, even more so than Cruz this season so that should count for something.
But Thome was an absolute beast that season and another good lesson about how baseball can change over just a few years. Looking at counting stats in 2010 doesn't tell the real story when comparing to counting stats in 2019.
The same goes for 1968 versus 1974 or 1982 versus 1989.
What matters in baseball is comparative stats and rate stats, how a player does in comparison to his single season peers, not overall in baseball history because baseball history is wildly in flux every few years.