It is all very well winning the Challenge Cup, but the Grand Final is the top prize.

Mike Forshaw brought the Bulls back down to earth with a bump with this stark admission as the team prepare for their Super League trip to Wigan tomorrow.

And the veteran loose forward accused Leeds of over-confidence in Saturday's cup final and predicted the Rhinos will start to slide when they resume league action this weekend.

"The two points up for grabs at Wigan are massive," said Forshaw, disappointed that his old mate Andy Farrell won't be back in time for the game at the JJB Stadium.

"Don't get me wrong, the Challenge Cup is great. But the ultimate achievement is winning the Grand Final. It shows that over the whole season you are the most consistent side. That is the big prize and that is the trophy I want to win.

"Victory in Cardiff was sweet, but we need to get back to business."

Something he is predicting Leeds won't be able to do when, as the top side in Super League, they take on Wakefield at home before clashes with Wigan and London.

"I think they were over-confident," said Forshaw, who wasn't impressed with Leeds chairman Gary Hetherington's "arrogant" attitude in the tunnel before the game.

"They just thought they had to turn up but to beat a side like Bradford in the final you have to take your game to another level. We defended brilliantly towards the end and they just couldn't find a way through.

"I think they might lose the next few games. It will be a real test for them to come back from this, they will have to be mentally strong. I just don't think they will cope."

But he has no doubt his side will be able to and, on a personal level, he can't wait for the trip to Lancashire.

"Wigan at Wigan is always one of the big games of the season for me," said Forshaw, who stills lives in the town. "To go there just after the winning the Challenge Cup is going to be especially sweet."