The only thing that makes a difference is big hitter. Having that off helps, but having a slider set with a low tackle slider helps almost as much as making the trait edits. I really don't think they are needed anymore. Plus iMacs trait edits kind of make everybody play the same, and the biggest thing i don't like is almost nobody will fumble besides the qb (if they are hit while releasing the football), because everyone is set to brace for all hits.
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