Churchill was the Hitler of Britain, Directly or Indirectly he killed almost 4 million Indians by starving them to death during Bengal famine but Churchill wasn't an isolated case, his predecessors weren't saints too. Cutting the things short, Britain just literally looted India and did atrocities over Indian people and nothing could compensate that. They made Railway lines one and only to facilitate movement of goods to make good profit from that. Britishers just demolished Indian economy and BTW they didn't constructed the Railway lines in Indian for free, tax money paid by Indians were used for that.
Second, Japanese killed Captive soldier who were fighting someone other's battle during world war but Britain killed the citizens of it's own colony...
more... just for it's profit and their is great difference between these two scenarios.