St Helens couldn't cope with Leicester's set-pieces, much like Wigan couldn't deal with Bath's when they played in 1996. But Wigan gave Bath the run-around in the league fixture, so I don't think those two games really proved anything. They might as well have played each other at cricket. Both codes call for different kinds of fitness - league games have four less players on the pitch for a start. St Helens and other top league teams are very fit, but you can't run around after you've had the life sucked out of you in the set-pieces.
Saints do have some big men in their pack, and size helps.
But, at the highest level, technique is by far the most important attribute. Raising the Super League standard Links to top Rugby League stories are at the foot of the page.