It's all relative. I'm short, but for a short guy I do look decent in clothes because I have decent structure. Of course I'm no match against taller wide guys with X-Frame and small hips, they look like monsters.
I think that apart from the severe lack of chest I am very well balanced and that makes me look much different than guys who, say, have huge arms and nothing else. There are many guys like that. That's prolly why no one has ever asked me if I bodybuild, they think I'm a weightlifter. That's good because, as a matter of fact, I'm no bodybuilder.
That being said, I don't think I look impressive with or without pump. I look my best carbloaded, sodium loaded after being depleted and dehydrated for few days. Pump helps but it's not a necessity. On drugs I can store so much glycogen that my physique can change on daily basis.