It's a relatively small helicopter IRL. As you can see in the image link, the width of the main fuselage isn't much wider than the pilot's shoulders. Contrast this with these real life photos of the MH53 Pave Low. I've deliberately chosen photos of the with people as a size reference.
https://www.globalsecurity.org/milit...fst8909541.jpg
http://www.airport-data.com/images/a...204/204257.jpg
https://encrypted-tbn0.gstatic.com/i...5b0NnGV6_VBfhM

More images of the SuperCobra with people for further comparison
https://i.ytimg.com/vi/Owf0wdjpJJ4/maxresdefault.jpg
https://www.militaryfactory.com/airc...ercobra_14.jpg
https://www.militaryfactory.com/airc...ercobra_15.jpg

Numbers

* SuperCobra
Length: 13.6m
Height: 4.1m
Width: 2.2m

* Pave Low
Length: 28m
Height: 7.6m
Width: 21.9m