No. Not over-dramatic at all. There were others, but for mass appeal, I wouldn't consider your assertion to be over-the-top whatsoever.
This is the stuff that sold people on the very concept. It made it come alive before anything else did or could.
I had a collection of ESB prints of many of these imagages as a kid. I don't know what happened to them, but they sure were cool.
Definitely not over dramatic. When I last moved I discovered that I still have the Star Wars and Empire print collections that were published back in the day - I remembered I had them as a kid but thought I had traded them away. lol! Just a couple weekends ago I was showing them to a friend and we both agreed how truly cool and inspiring the artwork was.