The difference is resourcefulness. The OSCP is designed to test your ability to find answers in the dark. If you cannot find, install, and exploit a free VM from VulnHub without help, you aren't ready for the exam.
: A free streaming program on Twitch and Discord that facilitates interactive learning for the OSCP. Recorded sessions include Active Directory walkthroughs and lab concept demonstrations. OSCP & PEN-200 Prep Ebook
The exam has a 3-machine AD chain worth 40 points. You can practice this for free using —a free, open-source script that builds a vulnerable AD lab on your local VM.