The flood videos of towns, cars, and people being violently washed away are way scarier IMO.
Urayasu looks built on the water and all I see in the linked video is a threshold condition where the water is just barely peeking up through the ground below. People are still walking around, cars driving. There are far more chaotic and destructive scenes on youtube from that tsunami.
I remember it, as it was unfolding live on tv. I've never seen anything as brutal as that tsunami, in terms of a natural catastrophe.
Different kinds of scary. The tsunami is clearly more dangerous as an actual threat, but it basically looks and works like a flood. This is a pretty familiar threat.
We think the ground is familiar too. So watching it change into something else, a squirming alien beast, is a different kind of fear. It violates your assumptions about what is safe, about what is possible at all.