I've seen before where you've said that in various threads, and I see that you're quoting it from a Head catalog, but I'm confused...
The original Head Agassi Radical Tour Trisys 260 OS (~1993/1994?) was always quoted by Head, at the time, as being 110 sq. in., and is still listed in TW's RacquetFinder database (from where I pulled the specs I quoted above) as being 110.
The XL version was 107 and the follow-on twin tube oversize was 107.
Did Head since change their methodology for measuring head size such that the 110 changed to 107 for the same racquet (I understand there are some issues re inside vs. outside of frame, etc.?), or is there a mistake by Head in the catalog you're looking at?
That was my stick for 10 years, so I'm pretty familiar with it.
I still have two, maybe I should measure them.