3) When Challenging a call.......you can choose what you are challenging....and you can watch the replay and still challenge a call (One of the few things I hate in Madden is the inability to challenge after watching the replay)
You can't do that in ESPN either. Go try it.
I've played both extensively (probably about 5-6 years of Madden franchise/owner mode, 3 of ESPN), and I would have to say they both have their flaws.
Madden has some really whacky bugs on occasion, like one time it made me kick off from the one yard line while all their players gathered in the endzone about 10 yards away from me (I have the replay saved).
ESPN's jerky button mashing running is kind of annoying, and the players run a bit too upright, like an ostrich or something.
Overall, I think I prefer ESPN because of the way the tackling system is designed. It has much better collision detection. Generally the gameplay seems a little better. You can actually tackle or at least impede people who don't have the ball, rather than just sliding into them and having them be unphased like in Madden.
Madden vs. ESPN:
Gameplay:
Collision detection - ESPN
Playcalling - ESPN (you can adjust linemen to stunt, etc.)
Running/Pass Catching(Offense in general) - Madden
Defense - ESPN (being able to hit anyone makes all the difference)
Franchise Mode:
Player Progression - Madden
The Draft - Madden (scouting/drafting in ESPN is kind of a crap shoot)
One glaring weakness is the inability to switch a player to a new position in either of these games. I think it'd be cool if, when you played someone at a position all year (say, Guard instead of center), they would actually be listed at that position -- or even a dual position designation (Guard/Center).