A good slug fest, but too many plot holes

Rating: 6/10 (16 May 2016)

My first gripe 1) For the bad Guy's plan to work Tony Stark had to basically check his brain at the door for the entire movie. He is Iron man because of his ability to think through analyze situation. He does almost none of that in this movie.
2) In a case of the baddest casting ever was Spiderboy and a super hot Aunt may in Marisa Tomei. This was by the worst interpretation of Spiderman I have ever seen. The character is just tossed in to be a part of the slug fest. Peter Parker apparently dumpster dives for computer parts and somehow develops his own spiderweb, but Tony Stark has to provide him with a suit because it looks terrible and he could not make one on his own? None of this is right or works.
Please bring back Andrew Garfield and Sally Field.
3) The winter Soldier which nobody seems to even be able to find crash's a car along what seems to be a public road at the exact point there is a video camera pointed at the car in the perfect placement ever and then he proceeds to kill the passenger, but shoots the camera out after he does all this.
Worst secret mission ever and completely unbelievable scene 4) did I mention Tony Start could not use his brain at all during this one.
5) Second part of why bad guys plan his ludicrous: Actually expects the avengers to kill each other. Beat each up yes, maybe in defense of their ideals, but they don't kill ANYBODY on purpose unless it's the bad guy/girl and he/she will not give up the fight or threatens to kill innocent people.
6) 3rd part for bad guy's plan.. throws his best chance at getting revenge by killing the super soldiers he needs to achieve his goal. Come on, he could have let them beat each other up .. then release the super soldiers at that point.. while secretly having a plan to kill the remaining super soldiers.
7) 4th part the bad guy seems to nobody. Even from his own telling, with no connections to anybody important... yet he seems to have resources that are way beyond his actual reach. Not enough back story to make this one believable.
8) oh right Tony Start was unable use his brain