Do you think the Shigeoka Brothers Ginjiro and Yudai are among the best 10-15 Minimumweight / Mini Flyweight boxers in history ?
Don't think so. Ricardo Lopez Rosendo Alvarez Ivan Calderon Roman Gonzalez Kazuto Ioka Ratanapol Sor Vorapin Wanheng Menayothin Knockout CP Freshmart Oscar Collazo Katsunari Takayama Francisco Rodriguez Yutaka Niida Chana Porpaoin Akira Yaegashi ...All have better cases than the Shingeoka brothers. Could add at least a couple more, I think.
Obviously their potential was cut tragically short as they were just entering their primes - but even so, I agree with @Drew101, it's just too stacked a division historically. Which is odd because one typically doesn't ever think of straw as being packed with talent in any singular time - but it's usually front-loaded with a great or two and then a steep fall-off.