It is the difference between walking into a bank and giving out $100 bills to 80% of the people there (what Hive did) and walking into a bank and taking $100 from 20% of the people there (what hf 0.23 does). It may be mathematically and computationally similar, but one is perfectly legal and the other is completely illegal.
This.
RE: Letter to Witnesses - Do not run Steem Hard Fork 23 - HF 0.23.0