I did a small modification to the background (rotated it a little and it's form is not 100% identical although very very similar). I really wanted to understan

I did a small modification to the background (rotated it a little and it's form is not 100% identical although very very similar). I really wanted to understand this better. Let's say I start from scratch and the result is the same as that final result I showed, does it change anything? I understand this is a gray area but this should be more clearer...