No, tornadoes are localized decimation, hurricanes are much larger but do less targeted damage. I've seen houses survive hurricanes, many do. If your house took a direct hit from a tornado without need for massive repairs you consider that your miracle.

Edit: apparently there are light damage tornadoes. The Enhanced Fujita Scale is used to describe tornado intensity in destruction. Ultimately though the point remains, that tornadoes are a lot more likely to do more direct wind damage to whatever they hit

Not really sure. Some stuff like the hurricane screws is something typically only for new builds. Stuff like storm shutters are fairly common add-ons in Florida. All these tweaks are added costs, adding extra insulation in colder climates adds costs too but the point is that modern construction techniques have evolved to address pretty much every scenario you can think of. Thats why things like shipping container houses are stupid.