CLLS and NWBO are not competing. Their treatment is Car-t therapy. The indication is leukemia -- a blood borne cancer. Cellectis' pipeline only has products that will treat blood borne cancers. Car-T cells are particularly good at initially clearing B cell cancers because they are willing to kill the B cells as well. In other words, you can't do that with solid tumors, by say, targeting your heart/pancreas/liver as well as a tumor. That would end badly.
Blood Borne cancers only make up about 10% of all cancers.