So neither of our starting corners, including Springs, has ever come close to Terrence Newman?

Spare me.
Most of the stats I've seen in this thread don't really show how well a corner plays his position. Tackles is a subjective stat for cornerbacks, the corner could've either been a real force in run support or burnt a whole lot by his man and made alot of tackles after the catch. Interceptions are NEVER a good indicator of who's good or not, especially if a cornerback isn't being tested often. For years I've wished the NFL or other media outlets would choose a new way of collecting stats on defensive backs.
Rogers didn't start from the beginning the same way any rookie doesn't start for Gregg Williams' defense. When he did play, he rarely gave up big plays and was solid in run support. I've seen rookie corners play alot worse. I have never seen or heard of any media outlet in DC calling Rogers "Toast". If they did, I have no idea what games they were watching, or if they were getting Rogers confused with Walt Harris.
I'm not going to back up the assertion that Rogers was the best rookie corner last season. I didn't watch very much of the other rookie corners. I do recall hearing rumors of the Titans coaching staff not being impressed with Pacman Jones, but the best way to know how good a corner is to actually watch the majority of their games. Since there is never a stat that shows how much a corner got beat. Unless someone actually watched the majority of the games both corners performed in, I don't see how anyone can make any assertions for one or the other.