See post #28 and #32
If we were going to be precise, we would identify a project as a PPP, then a CDA, and then which particular CDA, and since there are still going to be differences, we would have to turn to the book-length contract. Of course that is not practical.
Instead, we look at a particular project to determine whether it rises above a degree of objection or level of controversy. If so we use the jargon PPP to describe it.
While all of 130 is a CDA, only 2 segments are concessions. At the same time, TTC 35 is a CDA but not a concession. But they both rise above the level, so we call them by the PPP jargon.
Thus, TSR, I, and others can use the term and know what we are talking about, with out going thru a 60 word of 600 page description.
This doesn't mean that you have to do it. You are entitled to your semantical argument to muddy the water.