which is better in Mac os and window

hi, hope all of the members are good. my questions seems irrelevant but I am serious about it. i have been user of Window since from 10 years but now I want to purchase Mac book. I am very fond of watching 9x movies. I am concerned about that the movie watching quality should be more good than window laptop in mac. or it is less? or it is easy to use mac os operating system. I am digital marketer by profession. I have to do a detailed research. is it easy to do research through Macbook. I need detailed reply on these questions. waiting for the response