what is more soothing - greenery or water bodies

There is no one right answer to this. It depends. No ones finds rough ocean or windy tree soothing. Some people like still water bodies especially when big, it gives a sense that despite being enormous (ocean, lakes), there is calmness behind it. Just because you are calm does not mean you are weak. People find still water relaxing. On the other hand, nature with greenery everywhere , like spring season gives a good feeling. Winters are chilly with shedded tree and no colors, whereas when spring starts, you see fresh green leaves everywhere, the temperature improves, nature looks more colorful. This brings in happy feeling to people. The sounds of birds, small water canals, and gentle wind from the trees, brings distraction in a good way for people used to living in cities surrounded by tall buildings, noise and traffic. This is one of the reason why climate change is increasingly becoming a hot topic