Anil Kapoor was the best actor amongst 80s stars but lacked the most in Star appeal compared to Jackie Shroff, Sunny Deol and Sanjay Dutt.
I'm not saying he didn't have star appeal but compared to his contemporaries his star appeal wasn't at their level. But Anil Kapoor's acting is far above their level, like none of his contemporaries even come close, especially in emotional scenes.
If we were to draw a parallel to 90s stars then Aamir Khan is the one who doesn't have star appeal on the level of SRK, Salman, Akshay and Ajay. But unlike 80s stars in which Anil was unanimous in the acting department, over here it is definitely very close in acting between them all (except for Salman).