Make sure to correctly interpret your footage. In addition, in anamorphic comps, content will always look out of proportion. For that you can eitehr use the pixel aspect ratio correction button at the bottom of the composition viewer or work in the square equivalent comp sizes as defined in the comp size presets.
Your Composition is most likely set for a format with non-square pixels.
Make sure you press the Pixel Aspect Ratio (PAR) correction button at the bottom of the Comp panel (see below) and also take a look at the AE help section on Pixel aspect ratio and Frame aspect ratio.
Thanks you guys! That solved my problem!
I always work in the squished comp view and then let TV add 20 lbs to my characters....