You stopped, got out, and took a picture. Yours was staged. Maybe not as elegantly, but if you want to win, you may need to up your game from "just a snapshot" (or we need another contest with different criteria.)
If I start posting 6-light setups with lots of post and some crunchy HDR of my truck with a Carli and 37s, and the judges like it, why get salty? You are either taking it for yourself, or you are taking it to win. Occasionally they overlap, but it is not frequent.
It is a contest. If you and
@TRAMPER want to win (and it sounds like you do) and you know what the judges like (and it sounds like you do), then play the game to the best of your ability to win given those constraints. And if you do say "I want to win" and you push your technical/setup side, then when you shoot for what YOU want, it comes out better because you end up naturally seeing the lighting the framing and angles.
You shot was good. Could have been staged, but what killed you the most was the harsh mid-day sun, lack of contrast, pretty dull scenery, etc. It was a grab, it met the base requirements, it is a fun memory shot, but it needs help in post to win a competition. Mid-day is one of the WORST times to shoot.
@TRAMPER is already pushing it with the off-camera lighting.

I know that is how it's built out from other posts, but "hey, I will just flick on this light in here/over here for the shot" is, indeed, setting up lighting. I like what he was going for, but the execution could have been tighter/smoother. And, to me, it looks staged in the yard given the lighting from the left.
Tongue in cheek: don't send in "grabs" of your house pet or a mangy street dog to a high end Dog Of The Month competition and expect to win. It happens, for sure, but it is not a recipe which gives you great odds.
You want tour dog to win, give it a bath, brush it, set up the scene and technicals to be well-above par. Or go put in some action scenes. (Think: duck-dog hitting the water's edge at sunrise, early morning light shimmering off the water as it splashed up.)
Static, stock, truck pictures are going to start off a HUGE disadvantage, so make sure there is enough other pieces to carry the deadweight.
Go to Stugis, walk around and look at everyone "showing off" their bike. Stock bike. Sea of sameness. Boring.
Put a boring stock bike in an action scene, carving Spearfish canyon with some motion blur and great daytime lighting, and it is a whole different story. But the scene/action has to carry the day, because the bike itself doesn't.
G'luck in future competitions!
Cheers,
-mox