Eagles- Deuce Staley, Brian Westbrook, Correll Buckhalter
Giants- Brandon Jacobs, Derrick Ward, Ahmad Bradshaw
Staley was never more than mediocre. Buckhalter was solid, but never saw more than limited action. Limited action is also the problem with judging Bradshaw's talent - although the potential looks to be insane (although you could argue the same with Norwood in Atlanta - and that's not necessarily good). Ward and Jacobs are two of the best running backs in the league. Westbrook is great - due to his versatility - but with two mediocre has-beens on the team (and himself arguably on the down-side of his career), that's not really a fair comparison.
You're pointing to the BEST three-headed monster in the league and comparing it to a rather average one. I'd rather have Atlanta's backfield, for example (Turner + Norwood + whoknowswhocares).