Some people find dips easier and vice versa

Why is it so?

I know of this guy who can do 20 dips yet struggle with 3 chinups?

I can do 15 chinups but my dips is lesser and seems harder to do.

I thought dips = chest, triceps, shoulders, then chin-ups = biceps, forearms, shoulders, back?

YA LORX YA LORX. why ah?

can't do as many reps of dips as chin-ups. lol. max 5 then failure. Laughing

Same here,can do more dips than i can do chin ups.
Laughing

Usually its the pullup that is harder…