Quoted from ForceFlow:There's a big difference between making small positioning tweaks for centering (which I don't see anything wrong with), and losing a lot of the fine details in the artwork.
For instance, the detail is lost in my Taxi BG and it is noticeable and annoying, even without a side by side comparison. To each his own, of course, but this data point in an unsolicited survey places a decent amount of value on fine details.