Perception vs Facts

What determine the success a product or a service? Is it the right marketing strategy or the best product.

A product can be very good and very cheap and exciting but with the wrong marketing strategy, it could just tank. Example: like Yahoo! internet platform and email is the best in the world, but they are still struggling to grow their wares.

A product can be just alright, sometimes downright silly, and inferior than alternatives availab.e with the right marketing strategy, it could achieve wonders. Like the diabetes product Daonil.

I am not saying marketing is the solution to this, but it does seem like if you have the best marketing strategy in the world, chances are more likely than not for you to make it in the world.