Sims, who spent 12 seasons in the NRL with the Dragons, Broncos and Cowboys, feels the difference between the two professional leagues isn’t as great as the scorelines suggest.
“I can honestly say I don’t think it is,” he told the BBC.
“They’ve been a bit better this time. I hope people don’t look at the scorelines and think we should abolish this – no. To help grow the domestic game we need this competition.
“So hopefully they don’t do anything bad.”
Sims said his former club the Cowboys came to the UK with a single-minded focus.
“They really wanted to win this over here,” he said.
“I was talking to Paul Green before and he really wanted this trophy. They wanted to take it home and they came here and did their job