A website should only be a single part of your marketing plan. One piece of your marketing is not necessarily better than the other but combined they can become a powerful tool.
All aspects should be looked at and tweaked so they are performing at their best. Not unlike a car, there are so many parts- engine, fuel, electrics, wheels, transmission. One faulty component and you’re on the side of the road watching everyone pass you by.
That said, as part of a marketing strategy an optimized website can provide better results and more $$$ than “traditional” advertising. The word to take notice of here is “traditional”. Most people advertise the same as everyone else and wonder why they dont attract clients or customers! Dare to be different! This is where good copy-writing for your site ads will blow your competitors away.