original question
here goes my best explanations from what i have noticed
aggressiveness: tendancy to try to make a play on the ball. A DB for example will follow the reciever like a shadow , a very high aggressiveness would indicate that he would try for an int or risky ball swat more often, players with high aggressiveness are less likely to "play it safe" and it is the opposite of conservativeness. - so it can be good or bad , for a star u would want them to try to make plays , for an average player you might want like a 70-80 aggressiveness so they aren't getting burnt all the time , but u wouldn't want a 30 aggressiveness because they will tend to sit back and watch
Composure: this seems like the "how they react under pressure stat" I don't know if it affects DBs much at all. A reciever double covered or a qb under a close blitz might need composure? It might also affect things like tendancy to get a face mask(not sure on that), I think as long as it isnt like a 30 it doesn't help/hurt a DB much
Consistancy: For a DB this is KEY, the lower the consistency the more often a DB will mess up coverage. Say a DB's coverage is 90 , if they have a 30 consistency there will not be many plays that the DB uses his skills. They kind of take a "penalty" to all their ratings every once in a while and it happens MUCH more often if a guy has a low consistency.
about dbs taking wrong angles and jumping wrong - if it is ratings related it would probably be the agility, coverage,consistency, and aggressiveness kicking in and having problems compared to the abilitys of the reciever. Also a lot happens to be dependant on if the QB and WR sometimes just happen to throw a well placed ball to burn your DB. as a steeler fan i have been seeing my dbs in real life take bad angles, jump at the wrong time , dive in the wrong direction way too often the last several years.