Your product is good, original, unique, but they are not always matching all needs in perfect way.
A good understanding of the advantages and limitations of your product and a good knowledge of the competitors will already help you to react in the proper way in case of such an objection , because
You will feel more confident because you know how your product compares to the competitors.
You will be able to expect some objections and to work out your answer before you even start the promotion of a product.