] Any thoughts? Different assessments?

I think we are seeing the Tilneys as people who really like each other, not just as a brother and sister who love each other as family but don't really have much more reason to be together. In other words, given a choice, I think Henry and Eleanor would often choose each other's company over that of their friends and acquaintances.

The Thorpes, on the other hand, can take or leave each other, as it suits their own motives. For example, John sees his sister as a way to meet girls.