Brown told the St Helens Star: “I have said from the outset Leeds and Warrington have been the best two teams in the competition over the past four years and have won six of eight trophies between them and that does not tell a lie.
“They have stable line-ups, long serving coaches, and in key positions they have kept the same personnel. That gives them stability.
“Warrington have had a couple of injuries. One thing Tony Smith did last year was give his ageing players a week off here and there.
“It may cost him a game but it keeps his squad fresh. Tony is not obsessed about running first but he wants to win the Challenge Cup and finish in the top four.”