There is no official QA team for PEAR. There are only a few people who try to help with QA issues but they don't have any official status or rights to resolve issues themselves if needed. PEAR claims quality but that can't be met if there is no real QA team. PEAR group has been talking about fine tuning karma for all users so the current "user has access to everything under /pear in cvs" karma policy will be eliminated and thus QA needs special karma when that happens. More importantly, there is currently no formal process or entity to handle orphaned packages or urgent fixes to packages.
To summarize the problem:
No QA team = can't claim Quality
Nobody has defined how the QA team is supposed to work, how it should be structured and what its rights (karma) are supposed to be.