Yes, they did deserve to win the Nobel Prize. However, Franklin does not get enough credit for ther work on x-ray crystallography that lead Watson and Crick to discovering the shape of the DNA Helix. Many people believe that Franklin would have also won the Nobel Prize, but she died of cancer before getting awarded the Nobel Prize. Since the Nobel Prize is not awarded to people who have passed away, we can't award her the Nobel Prize.
The discovery of the DNA Helix lead to the development of the technology that allowed for sequencing the human genome. With knowing the sequence of our genome, we are able to get a better understanding of how genes in our body work and how mutations in genes can lead to the development of disease.