We too are eineklach from CHASAM SOFER AND RAK”E, and I always wondered the same question. I think the answer is, although we all now the greatness of R’ Akiva Eiger, bchaiov he wasn’t so poplar as the chasam sofer for the chas”s had a huge kehila and yeshiva, almost all rabonim in Hungary Czechoslovakia etc. where his talmidim or talmidim form the Kasav Sofer, and his sons and einklach where rabonim .. Bekitzur the Chasam Sofer was RABON SHEL KOL BENI HAGOLA, WHile R’ akiva eiger is famous for lomdim only that can spend a day understanding a Gilyun Hasas, or a week learing SHU”T R Akiva Eiger.
I have another question, does any one know of einaklach from R’ Akiva Eiger that are not from the Chasm Sofer, other then the once that are Einklach from R’ Liebel EIger -Kotzk… ?