I saw a couple of videos on YT dealing with the question; a few with Winfrey.
No one really dealt with the issue in terms of who Christ is: Creator.
So, the direct answer is; of course Jss is the only way, because he is the creator God. A lot can flow from that, of course.
The question comes from a basic monist view: that god is within the cosmos and determined by a prior reality.
Next time I get the question, I'll ask a few probing questions: why is this an issue for you? do you think people can invent their own way into reality? why do you ask, would you prefer another way? because only Jss deals with the problem that we have. It's like fixing a broken arm. reiki, chakra meditation, yoga, applied kinesiology, chiropractic, etc, won't fix it. What will fix it is proper setting of the bone and a cast. Reality is what it is, not what you want it to be...