Lots of Muslims blow themselves up, believing in 77 virgins and stuff like that. Is that proof of those virgins or merely their belief? I appreciate the list of martyrs but it is hardly unique to Christianity.
A suicide bomber really believes in what they are dying for and that is the point. With the disciples the fact that they were eye witnesses to the central point of their religion is unique. Either they saw Jesus rise from the dead or they were lying. If they were lying, then why would they be willing to die for a lie? Just doesn't add up in my book.
The disciples are characters in the Resurrection story. That their lives (and deaths) are accurately recorded history is also an open question, as was pointed out above [0].
Lying requires the intent to deceive. "Diminished faculty" or a disorder of mental faculties would fall under the normal definition of insanity, whatever the cause of that insanity. The claims Jesus made are too radical and too consistent to be described as mere mistakes.
Well, no, most of his claims were quite common in the time, not much is radical. Also most of those we only know 2nd or third hand and we know it's been heavily redacted on the way. If radical claims are a reason to consider someone divine, Buddha has much better cards.
The claims in question are those that are radical, specifically those involving claims of divinity, and thus not claims, if true, that can be known through unaided reason alone (i.e., the subject of divine revelation). That these claims are known through second or third hand accounts is neither here nor there. The Jesus that we know is the Jesus in those accounts so unless there's another reliable source you're leaning on (there isn't), there's little sense in talking about the "real Jesus" outside of the gospels (the most charitable reading of your use of the word "redacted" I can muster is that you mean the non-canonical gospels that were omitted from the bible, but again, those are irrelevant for reasons given elsewhere). Buddha did not make claims about being God/the son of God (which is to be expected given the Buddhist attitude toward theism) and thus the comparison in this regard is meaningless.