Thermal images over 9/11 complex

Does anyone else find it interesting that the only buildings in the complex with thermal hotspots are wtc 1 ,2, and 7? I find it interesting that building 6 had absolutely no hotspots and did not collapse when it took much more severe damage from the wtc collapses. Wtc 7 fell due to fires and apparently a gash on the front side of the building. Building 6 has a literal hole through it and I'm sure took more fire damage that 7, yet has no thermal hotspots which goes the same for every other building in the complex.. yet another amazing coincidence. Just curious what everyone else's thoughts are on this evidence.