system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] In terms of pure ability and skill, which Republic-era Force wielder are the closest to Luke around the time of the end of The Empire Strikes Back?

Or, basically, if you were gonna have Luke face off with someone that could use the Force and wanted to have a fair fight, who would it be?
gpt
You need to keep in mind that Luke was basically given only crash-course on how to access the Force, which barely lasted a couple of weeks by time of ESB. A padawan of his age in Old Republic times would be more or less superior to him in almost every way. 

To find his equal, you'll need to find someone equally wide-eyed and untrained in using the Force, or some shamanic Force-Tradition. Although in old canon even shamanic Witches of Dathomir swiftly proven themselves just as badass as post ROTJ-Luke.