Obviously this page is going try to convince you that SBI is a better way to build your own online e-business. The page points out many advantages to using Blog or Build an E-Business. The main points are:
Now I'm not saying you can't create a great blog with WordPress. (I have seen many) But if that is all you want to do then WordPress is fine. However the biggest difference between SBI or WordPress is that with SBI you own your content.