TTWSYF:
I'm not denying other martyrs.
I am denying that your example can compare to the earliest christian martyrs who claimed that ' Jesus indeed did rise from the dead after 3 days and I heard him say that''
That was what the apostles and dozens of others proclaimed unto death They were witnesses of the risen Lord and could not deny it. It wasn't only a faith thing, it was a witness thing too. Convinced by witnessing his resurrection and proclaiming it. Certainly you can see how that is a possible significant difference to someone dying because of anothers' words.
Close companions of Jesus and close companions of Muhammad who both die as martyrs are only different if you start with the claim that Jesus was special. You're trying to prove that Jesus was special though, so you can't start with that.
All of this only goes to prove my point, though, that everyone who professes a faith in any god, primarily has faith in other men first.
Faith that the men who wrote the books were telling the truth.
Faith that the martyrs were right to die for those beliefs.
Faith that every translator, printer, compiler and interpreter did so honestly and without changing the meaning for their own purposes.
Faith that your parents or whoever first told you these beliefs were true wasn't misled.
All believers faith in their god rests on top of a massive pyramid of faith in fallible humans. Humans that we know for a fact were not perfect, were subject to human failings such as a desire for power, control or fame. Again you might say that God preserves his word down through the ages, but that doesn't work because it's this monolithic pyramid of human's version of God that you are invoking.You can't use what's being proposed to prove the proposition.