I just browsed through some illustrators cards alphabetically and selected some that are fairly far apart in terms of release dates:
I definitely like the first one more.
I definitely like the first one more here as well.
Hmm, I honestly like both of them, even though they’re fairly different in both pose and background.
I like the first one more again here.
Both are great.
I like the first one slightly more.
I like the last one slightly more than the first.
And mostly added as joke: Ken Sugimori artworks where the Pokémon is the exact same, but the background differs. I know there are loads of cards where there are actually differently posed Pokémon, but I thought it would be funny to use the exact same Pokémon stock images side-by-side on purpose:
“Corporate needs you to find the difference between this picture and this picture, - They’re the same picture.”
At least with some, they actually gave it some effort and made it into a fairly decent artwork.
- For Heracross I defintely like the first one the most, with the Pinsir pincers in the foreground.
- For Meowth I like the first one the most, executing its Pay Day attack.
- For Sabrina’s Abra I like the second one the most for obvious reasons (more natural). I mostly added this comparison to show they sometimes play around with the sizes as well.
- For Wingull I like the second one more. The first is basically a blurred irl photo, where the second is an actual cartoon (like Wingull itself), which is much more fitting for a TCG card artwork.
- For Farfetch’d I like the first one the most. I appreciate the gentle gesture of putting its feet under the surface of the water.
- For Bronzor, both artworks are pretty solid, but I like the second one more. Just like Farfetch’d, I appreciate the gentle effort of adding the reflection in the mirror.
- For Ariados I like the first one more. Having more than one of the same Pokémon makes it nicer imo, even if they do use the exact same stock (it’s also why I like Ken Sugimori’s Neo Genesis Noctowl, where the stock image is re-used smaller and with glowing eyes in the background)
I wonder who (and how many different) people make the artworks using Ken Sugimori’s stock Pokémon PNGs. 
Greetz,
Quuador