Greene has played 27 games, and in that time Greene currently has a better wRC+ than what Tram or Lou finished with in their first year, plus, comparable OPS's. So it's fair to say that, with a full season of ABs (which he won't get this season because of his injury), he would have a chance to hold up his end of the bargain.
I'm not saying that Tram and Lou weren't a better combo in their first year, obviously they were, I just think comparing Riley Greene to either Gabe Kapler or Robert Fick is kinda ridiculous at this point. And that he's probably more comparable to Tram or Lou than he's being given credit for with MCS' framing.