Yes, I've had that "braised beef" in the Diner occasionally when I saw it on the menu. I assumed it was an Aramark creation then, and I assume the version in the box will be from Aramark too.
In the Diner the braised beef was overcooked, juiceless, hard as a rock and gray inside.
I assume it will be the same when served in a box and reheated. (It can't be worse.)
AraMark is evidence of how America has continued to dumb down -- at stadiums, colleges, transportation, cafeterias. They love to have exclusivity at venues so there is no competition to keep them in line. The public suffers.
At least the National Park Service has finally caught on, not renewing long term AraMark concession contracts in a number of well known Parks. The result has been a New Day as those replacing them (ex: Delaware North in Shenandoah NP) has seriously upgraded facilities, menus, offerings, attitudes. They still have a ways to go in H-R, but as far as the public's interaction in their venues the reaction has been mostly good. Without a proactive NPS, would this have happened?
Perhaps Amtrak should expand its horizons too.