|Yeah, marketing can be like this.|
His comments don't apply to games or apps, though, which have to compete in a market with tens of thousands of other products. Many excellent games go unnoticed, and marketing could certainly help those. Sure, going viral is great, but very few games will have that particular lightning strike them.
But you should certainly strive to have an excellent products, because that will make marketing so much easier. And your chances of becoming a huge hit depend on the excellence of your product. Excellent marketing on a mediocre product won't get you very far, not in this era of instant reviews that go worldwide the moment your game is available.