So what if he didn't like Indians? How do you go from that claim, to the claim that he perpetrated a "holocaust" against them? It's a monstrous calumny.
Unrelated to Churchill but worth reading: http://en.wikipedia.org/wiki/Jallianwala_Bagh_massacre
By that standard, of course, Gandhi would also be worse than Hitler, as he could have prevented massacres during the partition that killed much more people than Hitler ever did. In fact, he is accused of directly instigating several massacres, a hell of a lot "more guilty" than Churchill would be even if this were true. If this is true, Churchill refused to get people out of a big mess they got themselves into (which, granted, does sound like something he might do).
https://www.uwgb.edu/dutchs/PSEUDOSC/ProblemWithPacifism.HTM