'Adopted normal pressure' What does that mean?
Define 'Normal'?
Either they had sufficient differential pressure or they didn't. I don't know, I didn't watch it, But if its 107PSI (absolute) inside and its 100 PSI (absolute) outside, then the differential pressure is 7PSI. If it's 57PSI (absolute) inside and 50 outside its 7PSI Diff.
7 PSI diff is 7PSI diff.
Now whether they actually had 7psi (or whatever max diff is for that type), that is still open to debate.
K