Not really. AS TM said before, no armor is the same. There are suble differnces in the built. and then you have posture, height, condition of the hand guard etc.
Y'know, 5 years ago I couldn't tell a stunt from a hero hand guard. it was quite a learning curve.
So, Kido, take your time and look at fotos, and research, asking questions, etc.
Do you know starwarshelmets.com? check it out. it helpe me a lot