I don't care what the OPS of the two were. You can look at that stat all day long and quote it but anyone who kept up with this team at all last year knows that Paul Wilson pitched much much better than Lidle did. Sure Lidle would go through streaks of 2-3 games were he pitched wonderful but Wilson was fairly solid all year and kept us in a lot of games that the bullpen later lost.
Only three of those games the "bullpen lost" were quality starts for Wilson, so it' not like he didn't ever tax the pen by going short in games or needed the offense to pick him up.
I kept up with this team all last year, and I'll be the first to say (and was last year) that Wilson's smoke-and-mirror job isn't something a team should hang their hat on. There isn't a metric out there that shows Wilson to project anything resembling a 4.34 ERA (OPS Against is one of those) in 2005. He's the same pitcher he was three years ago and pretty much the same pitcher Cory Lidle was in 2004...well, except that Lidle pitched more Innings.