From THE OBSERVER:
Exactly. It's illogical. You canot be completely in favour of something when it's called one thing and then be completely against the same thing when it is known by another name.
... this is exactly the same claptrap that the Welsh druid, Rowan Williams came out with and which now most of the Church of England's talking heads spew out whenever someone in the media implies that maybe they're being a little homophobic.
If the Church of England believes that you can only have sex within marriage it cannot at the same time approve of civil partnerships for same gender couples. If it is okay with same gender couples having a sexual relationship within a civil partnership then it is saying that civil partnerships are exactly the same as marriage because they are only in favour of sexual relationships within marriage.
Quite honestly, if that isn't blindingly obvious to you then you must be a Welshman, boyo.