Correct, there are no 9.8 AF 15's that I'm aware of. Yes, there are about six times more TMNT 1 in 9.0 and above than AF 15 (approx. 364 TMNT 1 at 9.0 and above vs 65 AF15 at 9.0 and above). If I'm wrong or way off on the numbers, someone please let me know.
My low census remark was to all graded first print copies of TMNT 1, less than 1000. AF15 has over 3300 graded copies. The low census for all graded copies of TMNT 1 first print is part of the driving price along with it's pop culture presence. There will always be five things in life: death, taxes, Spiderman reboots, Batman reboots, and TMNT reboots.