The RWC is about the same in terms of teams participating but I still feel the CWC is more popular than RWC mainly because of the global audience. The RWC will undoubtedly draw bigger crowds because of the larger stadiums but the global TV audience will be significantly lower than the CWC. CWC there is a billion plus while RWC has probably guessing around 600-700 million+. Also Rugby is more of a secondary sport in most nations, the only nations where Rugby is a national sport are NZ, Fiji and Samoa where these countries are small in population while cricket has a number of nations where cricket is the national sport such as India, Pakistan, Sri Lanka, Bangladesh, Australia, South Africa and these countries have population far greater than that of the rugby nations mentioned above.