Firstly the Deutsche Bank building pictured below was a 42 story structure that was closer to the twin towers than building 7 was. As you can see it was also damaged from debris. The level of damage is comparable to that of building 7. Fires also were in the Deutsche Bank building. Both the Deutsche Bank building and building 7 were steel structures. The Deutsche Bank building never fell. The difference being the Deutsche Bank building was not part of the world trade centre complex, however building 7 was. Here is a relevant quote on the matter I have cut and pasted,
"The collapse of 2 World Trade Center during the September 11 attacks tore a 24-story gash into the facade of the Deutsche Bank Building and destroyed the entire interior of the structure. Steel and concrete were sticking out of the building for months afterward. This was eventually cleaned up but it was decided that the 42 story ruin was to be taken down. After the 9/11 attacks, netting was placed around the remains of the building. The bank maintained that the building could not be restored to habitable condition, while its insurers sought to treat the incident as recoverable damage rather than a total loss. Work on the building was deferred for over two years during which the condition of the building deteriorated".
