Answering question for Vacuum Tube - 12AX7, Tung-Sol Reissue

Product:
Vacuum Tube - 12AX7, Tung-Sol Reissue

Question:
Hi everybody, my thought and question is as follows: Is the Tung Sol 12ax7 gold pin nearly same as the standard Tung Sol 12ax7?? Or is there a small difference in gain or in EQ power??