Might want to check the primary/secondary label on some of your data. Firing time lists a 109E4 as having a VERY short primary but a long-as-hell secondary firing time. I think those are reversed.
EDIT: Come to think of it, I think all primary/secondary are reversed. I selected 4 and all 4 had really short "primary" firing times, but really long "secondary" firing times.
EDIT2: I just read the note under the graphic lol, that explains it. I think it's misleading, however, as AH has primary/secondary priority, and the chart has them reversed. Just my 2c.