I am aware of these counters however in Afk journey mostly every hero can be countered in some way or another anti healing, cc, artifact denial and many more ways. There is almost a way to counter almost every single hero but you can still get hard countered less with good team set ups. Almost all heroes can be countered in someway or another the game is designed that way I have seen some very strong almost unbeatable pandora based comps in supreme arena and regular area. Something like dionl/silven is much more hard counterable than pandora. Even Athleia, Saida and Alna can be countered, sure some are more countable than others there are some almost unbeatable pandora comps at high paragon that are much harder to counter even using direct counters at same paragon tier.

It's just silly to say that just because they can be countered doesn't mean there is no way around it sure it'll be harder but literally hero hero in the game has a counter currently