We as muslims can really not answer you because we can only say ''Allah(swt) knows''
He can even save kafir's(disbelievers) if he wants...
People making claims that you have to belief in One-God and then can go to heaven are just illogical in my eyes, because what if the person was never taught in the One-God teaching.
If you can look up for the truth and you are to ''lazy'' or you ''reject'' it then yes you will go to hell, if you cannot look it up or not know anything about it, i really think you will be judged on your deeds, behaviour and what kind of person you made yourself.
What makes one person see the truth of the Quran and another person see it as lies?