I think some may be staged, but other than that, he's legit. I mean, who runs on a soccer field like that? The only other person I know who does stuff like that is a guy named Remi Gaillard (check him out. He's hilarious).
When all three are speaking, the volumes are the same, ergo they're all donning mics. We know he and her are, but when the mark is even a distant away, the tonage is same, supposedly being picked up by one or both mics.
Try this one on for size with 30.5M+ views:
How Does A Homeless Man Spend $100?