The Reds' Uruguayan striker has plundered 29 goals in 40 appearances in a prolific campaign in front of goal.
"At the beginning of the season, I would not have said Suarez was an out and out scorer," Rush told the Liverpool Echo. "Not in the same way say Robin Van Persie is or Michael Owen was when he was at Liverpool.
"I would have considered him as much a maker of goals as a goalscorer. But the number of goals he has scored this season has amazed me."