On the Internet almost 20% websites are running on Wordpress so it clearly indicate the power of wordpress and how much potential it has according to developers and web gurus also, it is one of the best recommended cms for websites and blogging stuff.
wordpress is also one of the most popular cms, it is also because on the internet any other cms is not provides great value and customization opportunity to users specially for non technical users and if you are comparing it for other cms resources like plugins and themes wordpress also has advantage because lot of development you can easily see on wordpress platform if you are comparing it with others.
According to me wordpress gives us a great opportunity to explore our idea on Internet and I think the wordpress community and development is going on right way and one day over 50% websites might be running on wordpress.