First of all my excuses if this question seems stupid.
I'm 19 years old and have a friend who is the same age as I do. He has been going to the gym for about 1,5 year, where he is mainly lifting weights, bench press, squats etc. I on the other hand have been exercising from a young age mainly with bodyweight exercises and started gym some months ago.
I'm around 5ft10, ~60kg. My friend is a little shorter and a little heavier. When I do bench press I use almost 3-times less weight. Same story with the smith machine. However, my friend, who lifts so much more weight than I do, can do only manage one complete pull up(from full hand extension to chin at the top of the bar) and 3 chin ups.
I on the contrary do around 20 pullups and 25 chinups and started doing pullups with a 20kg weight belt(manage around 5 full repetitions). Due to not having enough spare time I nearly abstain from the machines and make my workout program on the pull up bar (pull ups, chin ups, typewriters, toes on top, leg curls, muscle up dips etc).
My questions are:
Is my friend, who lifts 3 times more weight than I do, stronger?
If he manages to lift so much weight, why he only manages so few repetitions?
Why can't I lift as much weight if I can lift, without any problem my own 60kg weight plus 20kg more?
Thank you for your time!