I don't want to read the various Council deliberations looking for inconsistency, so I'll just concede that point.
I could go on the before marriage tangent, but I won't, because it's tiring and pointless.
Instead, I would insist on the separation of homosexual behavior, and theft and murder more strongly than: well, murder is just exaggeration. It is not qualified as an exaggeration, since one of these behaviors has as a result that someone died before their time, and the other has two people engaging in consensual sexual activity. As for theft, again, theft harms other people as a general rule, sex does not. There are exceptions to both, but they are hard to view on the same level.
Fornication and adultery, since I don't quite believe in the sanctity of religious marriage, are actually about the same level as gay sex. Two consenting people engage in sexual acts for whatever reason they may have.