Comics is a sequential art so you still need to show you are able to:
tell a story in images
draw the same character and it would still look the same from panel to panel and from page to page.
draw characters in different poses, mostly exaggerated
draw people of different body types
draw different camera angles.
handle the text and balloons, handle sound FX, and show moods in color.
you can still team with others to create comics. let's say you specialize as a penciler, someone else will be the inker, another will do the flats and a 4th will do the colors...
Some comics are not even in colors, some are in ink only, or ink and ink washes like The Walking Dead....so I would argue perfecting proportions, anatomy and perspective is a MUST.