I give it a 4/5. I really enjoyed the movie. It wasn't half as dissapointing as blood prison. Not sure what other people were hoping for when the focus of the movie revolved around what it would be like if Naruto and Sakura's situations were switched and Naruto grew up with a loving family. I personally would have liked to see more of the other world rookies fighting but that was forgivable since Akatsuki fought along side naruto in their place. I have to say, Menma, by far is the most interesting Shippudden movie villain but there is a plothole concerning him as well.
Why was Kushina still not the host of the Kyuubi while she's alive? Was she not chosen to be its host because of Uzumaki's being better at controlling the ninetails? But lets say for whatever reason Sakura's mom was its host instead, then the ninetails would have been passed down to Sakura instead, unless baby Menma just happened to be around and they randomly placed it inside him even though Kushina would have been a more ideal choice since she's already an adult. But then again I'm thinking too much about it. I'd probably give the movie a 1/5 if otherworld Sakura turned out to be the main villain. XD