Assalamu Alaikum
Firstly, Sunnis are very much told exactly who Abu Huraira r.a is.
Secondly, most of ‘Sunnism’ is not made up of his Narrations, to thecontrary it’s mostly revolved around the Fatawa of the 4 Caliphs, Ibn Mas’ud, Ibn ‘Amr, Ibn ‘Abbas, Salman, Ibn Thabit etc