The bias in the OP

Comparing a Yu-GI-Oh dragon to one of to Drampa, one of the stranger Pokemon dragons. A more fair comparison would be to Hydreigon, Haxorus, or even one of the legendary dragons.
But their art styles are very different so I feel like it's hard to compare. Yu-Gi-Oh designs are more realistic and Pokemon are very cartoonish. I personally prefer Pokémon tho, so Pokemon