The stat's suggest pitch size/slope/altitude/orientation to the wind etc have no significant bearing on the overall points scored in any game and therefore the style of play.
These are the last 5 years average points scored;
Batley 51 F26 A25
Dewsbury 51 F25 A26
Leigh 51 F29 A22
Sheffield Eagles 53 F28 A25
Sorry, but what are these averages for? Each match played at their home grounds? Matches played against each other?