Put on a show
Not because the ExactTarget product is better than ours, because who even knows, and who even cares? Having the best product has nothing to do with who wins. What matters is who can put on a great show, who can create the biggest spectacle, who can look huge and unstoppable and invincible, and who is the best at bluster and hype.
No matter what your product is, you are ultimately in the education business. Your customers need to be constantly educated about the many advantages of doing business with you, trained to use your products more effectively, and taught how to make never-ending improvement in their lives.