All the yogas, we should deploy them if we really want enlightenment. If i have a capacity to work, why not take up the path of karma yoga? A capacity to meditate and sit quietly and focus inwards, why not the path of my meditation? And all of them work. Buckteis most useful also. So we will take up both, and we will pursue both. As sanvecande said, each of them individually can take you to enlightenment. And ah, they can in harmony. But even then, a traditional teacher of adweta veranta will never reject the usefulness of bacty. We are claiming for bakty a much higher role that