I have often looked at Hull FC and drawn comparisons between them and ourselves. We both moved in to our "sexy" new stadia at around the same time. Then they were a bit ahead of us in winning a challenge cup final and getting to a grand final in mid 2000's. Since then they have lifted the challenge cup another couple of times.
They had that period under Radford where they tried to replicate the massive Bradford team by going for a huge pack with Huge wingers but that wasn't very attractive to watch as after about 20 mins they would just let Sneyd kick for touch to give the big boys a breather. I don't think that was ever going to get them a GF win.
They have made some mistakes in the transfer market (eg Connor and Westerman). Then they have had a number of ex NRL halfback experiments with the likes of Kelly, Josh Reynolds, Brett Seymour and Jake Clifford but nowhere near as many as us and similar they have had a number of players leave part way into their contract.
I am also pretty sure that there are a lot of fans that get pretty annoyed at performances. I don't think there is any real difference in that department. If they are a bit more chilled about underperformance then good on them. Maybe that is healthier for the soul.