Opera version 11.50 (most recent) on Win7:
Tests To Run: 10935 | Total Tests Ran: 10935 | Pass: 7061 | Fail: 3874 | Failed To Load: 66
The fast majority (80%) of the error log appears to be in section 15.2.3, with half of the rest also being in section 15. This would imply that around 1/3 of the entire test suite is just in that section of the specification; as the test itself describes, its coverage is currently incomplete.