Joseph Smith died a long time ago, as did Mary Baker Eddy. The founder of the modern Krishna movement died almost 30 years ago.
I'm not sure how this ties in to my previous statement. Regardless, comparing Smith & Eddy with the Jesus' disciples' IMO is apples & oranges.
As mentioned previously, history is replete with madmen & charlatans. However, if the disciples of Christ were all party to a hoax, it does not seem reasonable that cutoff and isolated they would all to a man, hold to the veracity of their claim.
Again, if it were one, two, or even half of them holding on - and the other recanting - that would fit the cult model. That they all held on (knowing it all to be a hoax) is not reasonable.
And don't miss the most salient point of all; not only did they hold true, but managed to begin a movement that managed to affect the world as no other idea has...