The left is acne from what I can tell. Some people are more prone to it than others. Asians generally aren't prone to it unless they have very oily skin. Also alot of Europeans from cooler climates tend to not have acne.
That guy on in the right picture has some really bad cystic acne...or some kind of impetigo outbreak.
asians actually do get acne a lot.
i guess maybe 30% or so.