Of those four, Ryan is the best. Prior to signing with the Giants in the offseason, he was a cornerback with the Titans where he recorded 113 tackles (73 solo) with four interceptions and 18 passes defended. He also got 4.5 sacks and four forced fumbles which are very good numbers for a cornerback.
This season, he was put at safety which shows his versatility and a position change he was more than capable of. So far this season, he has tackled 65 players (49 solo) with a sack, three forced fumbles, a fumble recovered, an interception and eight passes defended.
Bradberry has also been lights out for the Giants in coverage this season. He has three interceptions and 15 passes defended which is tied for the second most in the league.
Combine the strong performances of Ryan and Bradberry with solid contributions from Peppers and Yidom and that could make it a hard game for Lockett, Metcalf and even Russell Wilson who may struggle to find his wideouts open.