#1. If you turn the Pass Reaction Time down to 0-20, you'll see more challenging coverage.
#2. Don't blame the game, most likely you're just changing your gameplan since your in the lead. I see no difference. Learn to play.
#3. I see no issues with the running game. You have to adjust with the Run Block and it'll work perfectly.
#4. Are you trucking with players that have low tackle ratings? This assumption is too vague. I fail at it too sometimes but when you do it with a big hitter, it always works.
#5. This is the first year Madden has used IE. Of course it isn't perfect. You'll see tweaks throughout the year and by next year it won't be Rag Doll Engine.
Stop complaining.