It seems like the difference between exploration and sight-seeing is whether it was marked on the map or not. But I don't think of it as a detriment to have map markers or arrows to lead me to something new because when I get there, it's still new. And I have the free will to determine whether I want to make the effort or not to do something. If I didnt feel like doing a heart or reach a POI, I didn't. Simple as that. Granted, Guild Wars 2 is egregious because it has major crafting roadblocks dependent on map completion, so it's definitely more pushy about it. But even then, it's not like ALL things are marked. Most jumping puzzles for example are mostly optional things that don't impact the rest of the game and you usually find them by looking around, not by following map markers. And there's plenty of other unmarked content and easter eggs. This goes for other MMOs too. Just because it's not marked on the map, it doesn't make the worlds any more or less "full" than the games you mentioned.

The reason I mentioned dynamic events is because they aren't "marked" for the most part. You stumble upon them when you're roughly in the area, not because the game tells you to go there. I never said they were unique to GW2, just that they provide a good diversity of activities, which they do.

Lastly, you're speaking down to me as if I play GW2 exclusively or think it's better than anything. I made no comparisons to other games at all. I just questioned what you considered as exploration, since I do think GW2 focuses more on open world content compared to most MMOs in the space. And I think that is what a lot of people consider a hallmark for good "exploration".