The veteran former New Zealand full-back, who was a straight replacement for Australian Clint Greenshields, has quickly settled into his new club by helping to offset the early-season absence of scrum-half Scott Dureau.
"Brent Webb is showing what he can do in that half-back type role that he plays from full-back," Smith said. "He's been terrific for them and, with (Leon) Pryce and Thomas Bosc there, they've got that covered at the moment. They're doing all right with some class there."
Top spot beckons for the winners and, with the only other undefeated teams, Huddersfield and Wigan, meeting each other on Saturday, the Super League table will begin to take shape this weekend.
Smith was less than impressed by a 17-17 draw at Wigan last Friday and is hoping his side can make their customary explosive start this week.
"It's our goal each and every week to improve," he said. "Wigan probably caught us a bit last week. They were probably a bit more intense than us at the start of the match."
The game marks hooker Micky Higham's 100th appearance for Warrington, while team-mate Garreth Carvell, the former Leeds, Gateshead and Hull prop, will be making the 300th appearance of his career.