By the traditional numbers, the Colorado Rockies offense had a good season in 2020. They were first in the National League in at-bats, hits, doubles, triples, and batting average, second in the NL in slugging percentage and total bases and fourth in runs. In almost every other category, they were in the top half of the NL.
However, if you look at the park adjusted numbers, those paint a very different picture. Their OPS+ was 87, which was 13th in the National League. Their wRC+ was similar as it was 86. Both of those numbers suggest that the Rockies offense is well below league average.