A harbinger for the PGA? Based on walking path, camera looks to be in the same place for the most part, McIlroy is standing more to the right than Garcia.
Hands at the top of the swing, Rory's hands are slightly more out infront of him. Sergio's shoulders are bit flatter, but I think he stands more upright than Rory, which can throw that off. If you lean Sergio over about 5 more degrees, then the positions would be very similar.
Look at when the shaft is parallel to the ground in the downswing. They are nearly identical. I think Rory clears his hips more at impact, and has a bit more space between his body and the club, but he also stands further away from the ball than Sergio.
I would say Sergio is steeper going into the ball, but only because Rory has more extension going into the ball.