This is what I find quite interesting. Winning 2.5 thousand dollars doesn't seem like a lot of money, I mean sure its good chunk of money but its not advertisement worthy, if you look at that bet the result win is nothing to show off and is definitely not the point of the showcase, its the odds of winning that much money, he hit on x16 which is a really low odd so that is why it is showcased.
At the same time 50 bitcoin bet on 50% was shown because it won 50 bitcoins in return, there the odds were not the thing that was showcased, it was the win result. So, the bets that are put here, are they here because of the odds or are they because of the wins? Or are they even random? I don't really know what the requirements are but it seems like a bit flexy and changes according to the bet.