I wouldn't say one is more correct than the other because they both can do ALL of the following without any problem.

1) Create Local User Accounts
2) Change User Permissions
3) Modify User Accounts that THEY have created
4) Install and Run Application that are considered "Non System" Apps.

If 3 was worded differently to say, "Modify ONLY the accounts they have created" then it would be a different situation.
But he did emphasize on the word "THEY" in 3. Think about it...