As seems to be the general consensus, I'd agree that the 2 points are equally valid:
We have a side that tends to score plenty of points out wide and this is clearly suited by the wider pitches such as KC and JJB (and Headingly when we go there
) . I don't know whether others have noticed but the pitch was further narrowed by a few yards to allow for the new dugouts.
There is also the anxiety from the home supporters that transmits itself to the players when things aren't going our way. Incidentally, this isn't a problem peculiar only to Cas - try listening to the home fans at Wigan, Leeds, Saints, Warrington etc when they're behind at home!