There is. You've got the blackbird, a long, yet thin jet, with Tooth and Wolvie right up front in the pilot cabin, where there are a bunch of instruments and equipment that can blow up on them. The whole blackbird explosion was more focused, with them right in the center. There's no way to tell where Lizard was when that big, spacious buidling blew. But the explosion was spread out. Plus there was no impact force from hitting the ground at hundreds of miles per hour, with a plane crushing you from all sides and blowing up at the same time, it simply isn't comparible to a building blowing up.
