I should have mentioned this in my last post in this topic, but anyhow...
The Cardinal has single-level Amfleet cars, plus a Horizon dinette. It also carries one Viewliner sleeper. It only runs three times a week.
The Capitol Limited has hi-level Superliner cars. Much nicer ride. It also carries the full dining car, has a observation car, and runs every day. Bummer is, no more "weekly specials" fares west of Pittsburgh, for the time being.
The Cardinal has been on my list of "Trains I Need To Ride" for some time; somehow, so far I've never gotten around to it.