Difficulties in Understanding the Mishnah

The fact that Beraysos are written in the same language and linguistic style as the Mishnayos is true in this chapter and throughout the Talmud. The entire Talmud is interspersed with Beraysos. Yet we find no other place where the Sages declare the greatness of a Beraysoh. Of all sixty-three tractates of the Talmud, why did the Sages choose Pirkei Avos alone to let us know the stature of a Beraysoh? The Midrash Shmuel states that "they are equal in stature to the Mishnayos."