Dudes gotta realize the marketing is what set people up to be disappointed. The Marketing was hinting as if Finn was going to be the new big dog Jedi, if he wasn't going to be that COOL, if Finn wasn't marketed how he was I doubt anyone would have even tripped about how he was portrayed in this first movie especially if he is allegedly going to earn his position as being the "new Han", but hell one can make the argument that Poe is going to be the new Han as in a peoples favorite that isn't the "savior" of the story.
This was low key on some Mad Max steeze, when you have Finn/Mad Max as the low key face of marketing then you watch the flick and someone else is the actual focal hero.
Like maybe I just dont know, but what Star Wars marketing of the past displays NON JEDIs with light sabers on the posters?
Look at every old school Star Wars poster, Han Solo is not welding a Light saber, so it is almost implied that holding a light saber in promo posters and commercials = Finn is a Jedi whether it be he is the main Jedi or a supporting Jedi.
these are all the posters (I know of at least) for the Star Wars flicks that are not only Luke, lol notice every person with a Ligh Saber is a Jedi in every single one.