This brings us to my question. Would an all merciful, all forgiving God send a devout Buddist, or Hindu to hell for eternity if they had never heard of Christ? We have been taught all our life that Christ is the only way. Many other religions teach that same philosophy...that this is the only way. So, what if this devout Hindu doesn't accept Christ, after hearing about Him once, because he fears his own gods will punish him for leaving the "only way" that he has been taught?
Your question reminds me a bit of my readings on some of the early explorers who 'converted' the natives to Christianity. The natives were so struck by the superior technology that they assumed that this was becasue of the Christians superior God. The natives then called themsevles Christians, worshiped Jesus and built crosses etc.., but were they really Christians? Half the time the explorers didn't even understand what they were evagelicizing.
In the situation your describing, the name of Jesus, if not accompanied by anything else is completely useless. The same with the historical/physical/narrow definition of Jesus. If you tell a Hindu that someone was born who was the son of God and died for our sins it means nothing. How can he accept it and why should he believe you? But if you tell him what this man SAID only then will important information be exchanged. If you tell him all the teachings of Jesus, only then might he ask, "That is truly amazing, who WAS this man who spoke so?"
If the Hindu is taught about the idea of Jesus and IF it is different then what he already knows from Hinduism, then I would say he does have a choice to make. He can either incorporate Christianity into his religion, convert to Christianity and completely leave his religion, or ignore Christianity.
If he ignores what he has learned then his Conscience will surly bother him.
But.... if a fully practicing goodly Christian meets a Buddhist who offers to teach a meditative technique that relaxes and increases wellness, and the Christian does it and finds it to be a wonderful experience, but then shies away from it because he feels it is incompatable with Christianity - This person will be bothered by his Conscience the same way the Hindu would.
In other words, the Goodness found within us - God - directs us towards His will and what is good for us. If we interpret religion in a way that is in conflict with this then that religion, or more accurately, our interpretation of it, is failing us.