If your point is that Canaccord was nervous, maybe. But nervous about what? Companies settle for all kinds of practical reasons. Canaccord may have weighed the settlement cost against the expected cost of continuing litigation: legal fees, discovery burden, management distraction, uncertainty, and reputational risk.
But the same logic applies to NWBO. If NWBO had Canaccord dead to rights and a clear path to a massive payday, why not press the advantage? Or could it be that NWBO also wanted certainty instead of years of more litigation risk? Maybe a certain settlement today was worth more than an uncertain larger recovery years from now.