I know I will catch flak... but don't forget that the 2005 Steelers were not all that great of a team. They just squeaked into the playoffs. Yes, they had an amazing run for the ring. But that squad was sliding downward from the 15-1 season in which they blew it in the playoffs.
How do they stand now? Not sure. They are certainly older. And they seem really disinterested in investing in a first-rate offensive line. Yes, it was enough to get them another ring. But Ben is not going to be young enough and healthy enough to keep up that level of play forever. Or for long.
On the other side, the Timmons/Harrison/Woodley combo would seem to be enough to take pressure of the aging line and the competent but vulnerable secondary.