He didn't lie but his tweet is pointless.
New song from Avatar ( so from a movie that will end up in the top 3 of most grossed movies of all time) flopped, Taylor's movie song flopped, rihanna's song wasn't that big either, Spirit that was lion king's new song flopped 100 times worse than HMH.
There are only some exceptions like Skyfall,Shallow and IAW . And once again these are exceptions, so I don't get why he specifically targeted Gaga. HMH wasn't a big hit but it's did decent. It's YouTube views are actually nice.