The Eagles were a topic of conversation on the Manning brothers' phone call this week. They played Peyton Manning last Sunday and face Eli Manning this Sunday when the Eagles visit the New York Giants. When the Eagles defense watches film it sees the same last name on the back of the jersey and many of the same mannerisms. But the brothers are not the same quarterback as the defensive players and coaching staff are well aware. "Obviously they're brothers both extremely successful quarterbacks" Eagles coach Chip Kelly said. "But it's two different offensive systems in terms of what Denver is running and what the Giants are running. I don't see an advantage that 'Peyton did this Eli is going to do this.' " Peyton could have shared with Eli how porous the Eagles secondary appeared to be. The Eagles are ranked 31st in the NFL against the pass and when Peyton threw for 327 yards and four touchdowns last week it did not help their standing. The Eagles might be without starting safety Patrick Chung for the second straight week too. Chung remained limited in practice with a shoulder injury and the next two days will determine whether the team will activate him against the Giants. The consistent message from the defensive players was that this is a different matchup from the Broncos so last week's struggles do not necessarily translate to a poor performance on Sunday. Then again the Eagles have been able to keep an opposing passer below 300 yards just once in four games. "We're ironing everything out and we're going to put on a better show" cornerback Bradley Fletcher said. "We have what it takes to get this job done Sunday." The differences between the two offenses start with how the plays are called. Peyton Manning who helped the Broncos to a 52-20 win over the Eagles is known to call the plays at the line of scrimmage. Eli Manning runs Giants offensive coordinator Kevin Gilbride's system although he can make changes at the line. Kelly and defensive coordinator Bill Davis praised Eli's arm strength. The Giants have a vertical offense that has produced four passes over 50 yards this season including three to Victor Cruz.