And that is precisely the rub right?
Those Hindu scholars that you cite, have also been summarily vilified by those the same Sanghi clans of yours. Those same scholars have listed the good and evil of those same kings, had you chosen to read them carefully. Often when a consensus is reached on a particular empire or emperor, the great deeds outweigh their crimes or vice versa.
I do not think we can find a reputable historian that gave a one-sided chronicle of a emperor, regardless if the emperors were Hindu, Muslim or Christian.
What you are in essence saying, lets not focus on their great deeds, let us instead focus on their crimes, because we can't possibly have Muslims being shown in a positive light.