what do you care about a company and how they spend their funds and time? Whether you agree with it or not, they poke fun at Apple all the time. Good for them if that's their strategy. Apple is a pretty easy target as of late.
In the end, phones should be able to withstand a bend test in the back pocket of a human. Notes do and the Jury is out IMO on the 6 Plus. I'll await the real world.
In terms of the QA on Samsung, it's just fine.
When you mock another carriers phone, while someone slips a business card into your own phone, I would say that the QA on Samsung's product is not good.
For the moment you mock competitors, they are going to be gunning for you, looking to see if they can find anything they can to break your product down as well. So you'd better be ready to combat that by making sure they can't find such a thing.
Samsung didn't, as they found a big one with with the Note 4. That gap should have been caught by their QA group, and was missed for some 13,000 units, if not more. That is not good QA.
BL.