Storage is landing data , if you want the page refreshes, can reload the necessary information, then the information necessarily need to be stored in Storage.
Vuex single page is applied global data set , data can be shared between components.
Not only that, combined with the calculation attribute properties, so also did the global data binding . Data does not fall.
Two completely different scene, but the front end of the relationship is generally calls Local computed variable -> Vuex attrubute -> WebStorage.
Vuex Store docs:https://vuex.vuejs.org/
Vuex in Quasar:quasar.dev/quasar-cli/cli-documentation/vuex-store