My question is far more sinister and duplicitous actually...
It’s based on the assumption (or incorrect assumption?) that if a hitler can accept Jesus and earn eternal life.... well, as far as comparative religions go, not my cup of tea.
The answer of course, would be that works/acts, not faith alone, are what counts.
I got the sinister part.. suicide is a grave sin, and to ‘accept’ Christ could be demonstrated.. by repentance.. not short cutting the return to the Maker..
As it is Written every soul will get their face to face for judgment. All souls belong to The Heavenly Father. Ezekiel 18:4
The legal adage is that "hard cases make bad law", and you've deliberately raised the hardest of all cases (Stalin, Mao, etc.). You seek thereby to overturn the law of faith as the sole requisite for salvation. That is the Jews' stumbling block that Paul debunked with finality in Romans, which I heartily commend to you.