Might it not also be because Wigan's current style of play is better suited to a wider ( football stadium) pitch rather than the more narrow pitch you get at a traditional rugby league only ground?
Not sure of the difference in width or even length of the DW and say Castleford's ground. The fact that Burgess is the league's top try scorer and Manfredi was also up with him until his injury proves that Wigan get the ball out to the wings frequently and the wider pitch obviously facilitates this.
And all this despite not having any "real " centres in the team! How many more tries would Burgess (or Manfredi or Charnley) be scoring if they had Gene Miles or George Carmont playing centre? Offiah only made his debut for Wigan in January 1992 and scored 30 tries ( in about 20 games) in the remainder of the season, including 10 against Leeds in the Premiership semi-final and 5 against Bradford in the Challenge Cup semi-final. Happy days for those of us old enough to be there!

You could be on to something there. The DW pitch size is exactly the same as St James park newcastle. Castleford is much shorter but I don't know the width. Wigan's expansive style certainly suits the wider pitches. However we lost at Warrington and their pitch is wider!

Has anyone noticed how far the touchline is infield at Saints (on the side where the players come out) We commented on it at the game there in June. I don't think the playing area was that narrow last year.

Also the pitches at St Helens, Hull & Huddersfield appear to be shorter than Wigan. Try lines at these grounds appear to be on the edge of the football 6 yard box markings whereas at Wigan the try lines and the football goal line is the same. Could it be these grounds were not built big enough for a Rugby League pitch.

That's so Masoe can warm up down there without getting his tits on the pitch