Asic quality of xfx rx480 gtr

i would like to ask how can the asic quality affect my mining at ethereum? Im using xfx rx480 gtr 8gb

Gpu1-66.2%
Gpu2-76.4%
Gpu3-62.3%
Gpu4-74.1%
Gpu5-72.9%
Gpu6-66.2%

Is there something wrong with my Asic quality