Yeah... anime kinda sucks at 'ethnicity' portraying - the manga aesthetic will often override these slight details. Cartoon, on other hand, seems to portray those differences better (if a little stereotypical at that)
for example, take punch out's design
and compare with say, hetalia.
since the ethnical features are more prominent in the cartoony-styled punch out, you can kinda judge where they're from easily. This isn't really the case with same-face-just-change-eye-design anime-style hetalia.
It really depends on what you want to portray - there is probably a better way to represent ethnicity in manga style, but there are no absolute "rights" and "wrongs" when coming to character design
What's bizarre, is that cartoon consistently draws japanese people with thin eyes, which is a given, whereas anime does the opposite - Japanese characters are often portrayed with bigger eyes than (or at least, as big as) western characters...
for example, take punch out's design
and compare with say, hetalia.
since the ethnical features are more prominent in the cartoony-styled punch out, you can kinda judge where they're from easily. This isn't really the case with same-face-just-change-eye-design anime-style hetalia.
It really depends on what you want to portray - there is probably a better way to represent ethnicity in manga style, but there are no absolute "rights" and "wrongs" when coming to character design
What's bizarre, is that cartoon consistently draws japanese people with thin eyes, which is a given, whereas anime does the opposite - Japanese characters are often portrayed with bigger eyes than (or at least, as big as) western characters...