Are looks deceiving?

Have a look at the game below, after White has played his 15th move. A similar position to this occurred at Street Chess on Saturday, and at first glance I just assumed White had a big advantage. (NB I cannot recall which White rook was on d1, so White's 14th move may have been Raxd1). With the bishop well posted on f3, and being the first to get to the d file, all I could see was White using the initiative to win the game (and in the game on Saturday, this is what happened).
So I am a little surprised that Black won the game given here. Of course the black pieces were being handled by GM Gawain Jones, and he did out rate his opponent by a significant amount, but White should at least hold this. Playing though the game a few times (with the engine off) I suspect that White was a little eager to swap pieces off (especially the bishops), until it reached a point (on move 31) when the final rook exchange left White with a lost pawn ending.
If there is a lesson to be had here, maybe it is that if you look like you have an advantage, keep the pieces that give you the advantage!


Storey,Charles (2268) - Jones,Gawain C (2549) [B73]
Coulsdon Jessie Gilbert Coulsdon (10), 25.08.2008