WIGAN recovered from an early scare to run in nine tries and demolish London.
Josh Charnley and Iain Thornely each bagged a double in front of more than 11,000 fans at the DW Stadium.
But the home side were given a fright when London took a shock lead in the first-half.
Man of Steel Sam Tomkins was sin-binned for questioning a decision by referee Robert Hicks, during which time the visitors scored two tries to lead 12-10.
Wigan edged back ahead to be 22-18 up at the break, before Tomkins scored a sparkling try and helped Pat Richards and Blake Green cross for touchdowns to end any fears of an upset.
Coach Shaun Wane admitted he will be speaking to the No.1 about his petulance to ensure there is no repeat.
Tries by Liam Colbon and Kieran Dixon helped the Broncos battle back from 10-0 down to lead 12-10 while Tomkins was off the pitch for questioning a decision by ref Robert Hicks.
Hookers Mike McIlorum and Chad Randall exchanged tries before Sean O’Loughlin - outstanding until being rested for the final quarter-of-an-hour - had the final say of the opening half.
London’s early spirit faded as the Warriors cut loose in the second-half, with Green, Ben Flower and Liam Farrell all impressing in a slick attacking spell.
But the win came at a cost, with prop Lee Mossop leaving the action with a dislocated shoulder which could sideline him for 12-weeks.