Quite probably several reasons, how many kiwis made up that 44000 why would they cone watch broncos. ? How many curious neutrals were at that games were there, eg ru fans why would they watch week in week out? How many, wigan Warrington, Leeds Bradford, saints fans were there? Why would they come to watch broncos.?
Look at our crowds before we dropped into championship they were never that good, take into account reduction in away fans that does not help.
Our last season in SL we won one game, only die hard fans keep coming.
Besides you are not really comparing like for like are you?
Did u go yesterday?