Sorry to break this news to you, but that means NOTHING.
I can make a phone in my garage.
I can make a rig to test my phone.
I can set my rig to a level I think it acceptable.
I can subject my phone to tests on my rig and it will pass my tests I have created.
I can call you in to see my phone not breaking on my rig and passing my tests.
It will mean NOTHING.
Without any standard, or any comparison it's all worthless.
Anyone can make anything that will stand up to their own testing on their own rigs.
I don't expect there is ANY standard set up for phone strength, it's totally down to the maker of the product to decide how strong they want their product to be, and whatever they decide whilst sitting around the table, is what the product will be.
Unlike crash tests in cars, or motorcycle safety helmets or ratings on other electronic goods that inform you the buyer, a phone can be anything.
The ONLY way a consumer can know anything is for either there to be fully independent testing, like we have seen in this video, but which runs more tests, or for there to be an international standard set in place, which a manufacturer can test to, and perhaps get a rating. So you would have say 1 - 5 ratings.
Apple testing their own products in their own way on their own testing rigs to their own level of satisfaction means nothing.
Samsungs phone of the same size is 50% stronger.
So Apple's phone would have been a fail for Samsung on Samsungs testing rig to Samsungs Standards, but a Pass for Apple on Apple's lower standard of acceptance.
You understand now?