Each PIP is in fact individual. I have been involved in helping to create then for individuals in the past. They are usually created by the direct supervisor with input from others and then sent for approval to HR whi can also modify them. Key things to look for in your PIP....how subjective are the tasks to complete. example; create an improved operating procedure. this is relatively good to have as there is a fairly though not exact, defined goal. example 2; contribute more towards the goal of We Are ExxonMobil. this is bad because it is hard to define what that means exactly. Second thing to note, do you think your supervisor likes you? if they do, they will do their very best to make sure you pass the PIP, (though they aren't the only decider they are the potential kingmaker). If they don't like you then it is enough for them to say you didnt satisfy the goals and say goodbye to you. As always, the outcome is largely decided before it begins with some small wiggle room each way. If you behave during PIP like you don't care and you want to leave, then the supervisor is unlikely to stick their neck out for you. If they believe that you really are trying hard to stay with the company, (and you don't cause them too much trouble), then they will go out of their way for you.
My suggestion would be to ask to get the PIP, take a look, and if you feel it is a foregone conclusion then you can convert it to a PIL at any time. Maybe they told you that, maybe they didn't, but that is the policy. As a Supervisor, best of luck to you with what you choose, and remember, the PIP percentages came from Corporate, not your supervisor, so try not to be too harsh on them, they are in a hard place with mandatory numbers to meet. Its you or someone else, and likely isn't personal.