You are right Stush, we are all in a learning curve. That info of the Sans surviving in Manila in deep flood waters got me blindsided with my Sans here two years ago..that's why I almost killed mine when I left it outdoors during winter. Forgot to consider the temperature during winter. Manila weather is almost always above 80F and higher with the humidity. While weather here in our area goes really chilly and with episodes of freeze warnings, so my Sans really sulked big time, so indoors I grow her from then on. And to think they do not even use cactus soil there.
Soil in Manila is always rich loamy soil, easy to plant a lot of stuff. And with the torrential moonsoon rains there, even without flood, it should be too much for the Sans to handle, but they are just growing so well there. So I surmise that the Sans are more particular with the temperature.
Amazing at times how the plants adapt