osm2po vs osm2pgrouting: workshop pgRouting

As osm2po was a more reliable way to convert an .osm I went for that solution to load my date in postgres.

In the workshop however the author points out to check the result after osm2pgrouting. The following tables must be created:

"classes"
"geometry_columns" "nodes"
"spatial_ref_sys" "types"
"vertices_tmp"

"vertices_tmp_id_seq" "ways"

After the sql (generated from osm2po) has run, only the tables "geometry_columns" and "spatial_ref_sys" are created. How do I fix this difference?
Is osm2po incomplete? Did something go wrong?

Can anyone point me in a better direction?

Thanks alot!