Don't really think we need the attitude or the sassy comments.
However it can't be. Look at the height of that shed you're claiming? Its too high and the beams in that shed match the ones of the main house. They are the same style structure.That shed is almost the same size of the house, the challenge arena doesn't look anywhere near that big?
View attachment 55294
Another shot of the challenge arena. You can see the trusses across the top in red aren't that steep which match the smaller shed and not the profile of the other larger one. The width of this doesn't match what you're saying.