In Australia, the most popular sports in terms of crowd attendance were Australian rules football, horse racing, rugby league, motorsports, cricket, rugby union, and soccer. So yes, you would say that rugby- although it is not the most popular sport in Australia, it is more popular than soccer.
Football meaning AFL or Soccer? Rugby League is more popular than soccer in Sydney also as well as AFL. Whole of Australia, AFL is most popular sport, and Rugby League is second and soccer is 4th just after cricket.