That true experiment to make slow confirmation bitcoin
this is part of blockchain stress
because from what i have read about their test is that they were trying to send big size transactions to network with high fees to see if they can fill all the blocks and don't let any other transaction be included in the blocks except theirs.
this is small transaction with smaller fees, and doesn't fit the profile!
here is an example of the tx they sent in the test:
https://blockchain.info/tx/888c5ccbe3261dac4ac0ba5a64747777871b7b983e2ca1dd17e9fc8afb962519
17894 (bytes) with 0.0021 BTC fee