I think it's interesting how these threads seem to go in waves of pessimism followed by optimism followed by pessimism followed by optimism, and so on...
They're quite a roller coaster ride to read.
The fact is that the absence of AJ Pierzynski cannot possibly account for the huge difference in offensive production between now and this time last year. There's gotta be some regression to the mean. We're already seeing it with Dunn. By the time he slows down again he'll probably have his average up to where he was last year, and he's already matched his 2011 HR total, which he did at about the same time last year (May 11).