ok, that explains why 15 vs 15 with 17 YES votes still don't pass. Its not due to specs, its due to the setting of 60%.
When axis are stronger, and a vote is done,
1. Not all players vote.
2. Most axis will vote F2
Conclusion, 50% is already hard to get, while it is most likely already badly needed.
Then its better to dabate the 60% , Especially with a shuffle vote