Why did Katy have to pick THIS Olympic games to have the theme song for? tbh if they were smart they'd pull Olympic promo while they're ahead, bump it up to lead single treatment (or put out a #1s album or something) and just let the MV be the main source of promo.
Best Music Video is her best shot for a Grammy with Rise. I don't think she'll get any of the song-related ones because Adele, Justin and Drake will probably sweep those.
tbh if they were smart they'd pull Olympic promo while they're ahead, bump it up to lead single treatment (or put out a #1s album or something) and just let the MV be the main source of promo. 
maybe she knew she has no chance for any song category so she's aiming for a music video!