Is a "Modified Cushion Brilliant" the same as a "Square H&A"??

[I Love Sparkly Things]

I''ve been reading a lot of historical threads and looking at www.goodoldgold.com and I''m confused if these 2 cuts are the same??? I think they are...

 

[moremoremore]

I''m not sure about the technical stuf, but The H&A cushions (I see on the cert it says square cushion brilliant) is not the same as another GIA cushion brilliant. You''ll see that the GIA plot for the modern cushion looks exactly like the H&A cushion but they are totally different.

 

[I Love Sparkly Things]

How are they different?