It all depends on how serious you take it and how far you would try to go trying to explain the unexplained parts of the pokemon universe, like why pokemon don't die from being scorched by a Flamethrower attack, or why they don't dislike battling etc.
For example, if I was personally in charge of the games or such, I would keep the pokemon world less cruel by explaining that there are huge varieties of fruit/vegetables with way more exciting and concentrated tastes (making eating a pokemon/human a much more lame experience to begin with), which would also of course include ones with similar compositions to animal meat or any other useful nutritions that are usually obtained this way.
By that logic, the question wouldn't make sense, as much as asking whether someone would drive over a human with a truck since the truck is big enough.
Of course, I seriously doubt that gamefreak are anywhere that deep in this train of thought.
Before someone mentions it, my main pre-assumption is that dex entries are not to be taken seriously, and are more like a random hilarious nonsense thing.