By looking at the gameplay teaser, for one: All the guards could just snipe them while their in air, and two: When I hear gameplay teaser I think legitimate gameplay, not obviously scripted and acted out until the end like this one.
For example:
*Agent casually lands even though he was clearly in the guards line of sight and seen.
*Agent runs around the table while there are 3 guards, detected and the one agent takes them all out even though there is one agent fighting 3 while the other agent cowers under the table.