First, Christianity is testable in the sense that it can be studied historically. Some verses also of the bible challenges you to study Christianity like 1 Corinthians 15:14-19 " 14 And if Christ has not been raised, then our preaching is in vain and your faith is in vain. 15 We are even found to be misrepresenting God, because we testified about God that he raised Christ, whom he did not raise if it is true that the dead are not raised. 16 For if the dead are not raised, not even Christ has been raised. 17 And if Christ has not been raised, your faith is futile and you are still in your sins. 18 Then those also who have fallen asleep in Christ have perished. 19 If in Christ we have hope[b] in this life only, we are of all people most to be pitied. "
Second, you will be amazed that the majority of historians today agreed of the 3 facts concerning the resurrection of Christ. The only disagreement among them is how these 3 historical facts better explained. And base on explaining capability the "Resurrection hypothesis" is the best explanation.
Thirdly, yes I agree of some historical evidence of other religions although I also suspect that some have inaccurate history. But the overriding point is Christ is unique in the sense that He is the only religious figure that claimed to be the Son of God, perform miracles, said blasphemous claims and claim to be " The only way, truth and the life". These things set apart Jesus Christ from other religious figures. And His claims were vindicated when God raised Him from the dead and His resurrection is historical as supported by the 3 facts.
Fourthly, yes those other religions can say that I am wrong but that doesn't affect the truth of my worldview because it is based on the bible. Example JW's will say to me that Jesus is only a saviour and not God so I will get the bible and point out the verse that Jesus is both God and saviour.
Fifthly, I am not blind, the truth is I am hurt to see those people.
And I will add. Aside from being historically accurate of the Gospels, there are also sources outside of the bible like the writings of Tacitus, Josephus, Lucian of Samosata and others.