The 32-year-old bagged a brace of tries in the game, but felt that the Rhinos still had several issues to resolve before their next fixture.
“It was a tough game,” he told Rhinos TV.
“We expected that – it’s always a tough place to come.
“All credit to Hull KR, I thought they played well. It’s probably going to take a few weeks for them to find their feet with the new signings and everything.
“But it was a very tough game out there, very physical.
“We had to grind it out, and we’re pleased to get the win. There’s lots to work on, but for a first hit-out we’re pretty happy.”
“I thought they both played really well,” he said.
“You can tell Campese’s got a lot of quality. Kelly’s very individualistic and causes a lot of problems.
“I think they’ll trouble a lot of teams this season with players like that.
“I thought defensively in the second half we were a lot better – I think they only scored a try off an intercept.
“But it was a bit of a shock in the first half – we didn’t have much ball, and when we did, we didn’t use it wisely enough.”