I've played the PB112 and GS112 briefly, but I would go with the Aguilar, no question. Yes, that sensitivity difference matters, and I think the PB112 has a slightly muffled, boxy tone. The Aguilar, on the other hand, is excellent, with a big low end for a 1x12 and warmth with clarity.
"Ignorance is common, but in a learning environment it cannot be tolerated as a permanent condition." Beverly Daniel Tatum, President of Spelman College.