And for ROA it says:
"The right of abode in the HKSAR will allow you the right:
- To land in the HKSAR
- To be free from any condition of stay (including a limit of stay) in the HKSAR;
- Not to be deported from the HKSAR; and
- Not to be removed from the HKSAR."
So clearly in legal terms, being deported and being removed are different things. With ROA you can't be deported, with RTL you can. In neither case can you be removed.
Any lawyers here care to define the difference?