You have to remember that in American media, WWII was D-Day and the Pacific Theatre. Stuff like Stalingrad and Kursk might as well not have happened.
As for Churchill and India, keep in mind that he also refused to allow US and Canadian ships to carry food there (even though both the US and Canada assured him they had the shipping capacity and food production to do it), hoped Gandhi would starve to death, and was of the view that Indians would never be as well-off under self-rule than they were under the Raj.
(Also I've seen some claims that part of why his condemnation of the Jallianwala Bagh massacre was so vociferous was not entirely about how many people Colonel Dyer ordered murdered, but rather also because of how it undermined the legitimacy of British rule in India.)