If it is true that...

Bar Kochba did not have followers who died trying to tell people about him

Then it must be true that...

Others who claimed to be Messiahs did not have followers die trying to tell people about them

If it is true that...

Many people gave their lives to tell others about Jesus

and

Others who claimed to be Messiahs did not have followers die trying to tell people about them

Then it must be true that...

There is something interesting about Jesus