If you want to compare what Stubbs and Dickerson are likely to do going forward I'd look at what they've done over the previous two seasons:
MLB (421 PAs): .283/.383/.440 - .823 OPS
AAA (414 PAs): .287/.384/.479 - .862 OPS
MLB (196 PAs): .267/.323/.439 - .762 OPS
AAA (556 PAs): .272/.353/.379 - .731 OPS
Let me put it this way, if there were some way to wager on the respective lines that Stubbs and Dickerson put up vs RHP in 2010, I would jump on it in a heartbeat. I can't toss out Dickerson's last 850 PAs as fluky while accepting 200 PAs from Stubbs as indicative of his true skill.