How bout them skins?

[Hunter]

How is that different from watching lots of video tape and reading the defense?

There's a big difference between reading that a team is blitzing and knowing a team is blitzing because you know exactly what play is called. The Skins show blitz and then drop into coverage all the time, trying to make the offense audible. If the offense knows that they are only showing blitz and dropping into coverage, thats a big advantage.