View this from the perspective of our personnel. Robinson is easily the equal of Jeffrey, except he's better. Shaheen matches their TE at least in terms of athletic ability, and of course we have Burton. Defense's have to respect Howard on the run option at the snap. Then see the play design with quick hitting routes and imagine Anthony Miller with his quickness making those inside or outside breaks. Topping it off is Trubisky's quick and accurate release. We've seen how well Foles can execute this. If he makes the right reads these plays will be hard to defend. The video includes film of the Vikings defense trying to figure out what the Eagles were doing.
It's not the end all because I can easily see how a well executed zone defense can blow up these plays, especially with smart players. Plus they now have more film on it to prepare. Mixing it in from time to time especially when you know where the defense's weak point is should pay off.
Once teams adjust to the short stuff and start undercutting routes it is easy to fake that quick pass, but then have Trubisky drop back a few more steps and go after a deep or intermediate route. That's where Gabriel comes into play, or Cohen, or even Shaheen. With Shaheen, if a defender is right up on him he'll have to decide if he's going to prepare for a block or step back into coverage, and if they are off the ball then we might own the early advantage on the play. Guess wrong and Shaheen is gone, or Jordan Howard is gone.