There are some good clubs in Argentina, but context is important.
The Argentine league has 28 teams with a lot of garbage at the bottom playing a single round-robin, the Belgian has only 18 in which Genk was in a season-ending playoff series against the better teams. Genk was also in the Europa League last year and Orban has a hattrick in the Conference League this year, whereas Veliz' Rosario Central hasn't been in the continental competitions while Veliz has been there.
All in all the teams Orban has played against are much stronger than those Veliz played against.
Veliz did score a brace in a 3-3 draw against River Plate on July 24th, that's pretty good. That might be available for replay on Paramount Plus maybe I could fire that up...
That's another thing with Veliz though, he arrives here having just finished a full season at a pretty tender age. Giving him some time and a "pre-season" would do him some good, whereas Orban is ready to rock.