Despite the Roosters being crowned World Champions for a second successive year, Woolf insists he can not fault the effort of his side after his young side went toe-to-toe with the 2019 NRL winners.
Super League champion St Helens offered willing resistance at their home ground, Totally Wicked Stadium, with incoming Canterbury Bulldogs prop Luke Thompson impressive for the beaten side.
The challenge has been held in England for the 19th time in 21 years and was funded entirely by the Super League clubs.
This latest triumph, against last season's Super League Grand Final winners St Helens, also maintained the Roosters' 100 per cent record in the tournament, with their first triumph having come against the same opposition back in 2003.
"It's something the NRL should get behind as well, it's deserving of a rightful spot on the rugby league calendar".
"The spectacle that St Helens put on tonight was incredible, it felt like a finals game", Robinson said.
Robinson believes the match is better served by being played in England but wants the NRL to host one every four years and make it a big occasion.
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It's not my best night, because we haven't won a trophy. "Then hopefully the Anfield noise can get behind us and guide us to victory".
This is the Kiwi international's third World Club Challenge appearance, and he said he is excited to be back over this side of the world.
"In the end they win, so they're still the best team in the world, but I think we beat most teams tonight, that's for sure".
It was clear that the Australian club are still in pre-season - their lack of timing resulted in a number of penalties for high tackles - but there was plenty to encourage hopes of a hat-trick of domestic titles.
Flanagan had the misfortune to strike the woodwork with both conversion attempts so the visitors' lead was just two points at the interval and Saints might have been in front for Makinson had a try in the last minute of the half disallowed for a forward pass.
The Saints boss commented: "Everyone has commented on the atmosphere and how tough a game it was".
SYDNEY ROOSTERS 20 (Joseph Manu 2, Daniel Tupou, Luke Keary tries; Sio Suia Taukieaho 2 goals) ST HELENS 12 (Luke Thompson, Alex Walmsley tries; Tommy Makinson 2 goals).