In reply to innes:
The moves in the groove are a bit harder than they used to be. I redpointed FT in 2004 via the groove and had a play on it earlier this year when my son was working it. The difference I found via the groove was that some of the little footholds just above the overlap were missing making the move to the top of the flowstone shield harder. Once the hold on top of the flowstone shield has been caught, the moves left across the groove into the hard press are about the same in my opinion.
So, to answer your question, I personally think FT, via the sequence in the groove, is harder than when I did it. Is it still 8a? I would need to go back to the 2004 version of Jazz Butcher, which sadly ain't happnin' in this dimension
However, doing the sequence up the arete is about the same as the old sequence via the groove. Just a little reachier and slappier (not real words but hey...) and that is the method my son used who was about 5'8'' at the time.
Good luck on FT.
Cheers,
TJB.