I'm not sure what you mean. The 2Cs are not tryptamines at all, so what would be the meaning of dismissing them as such?
As I said, "there seems to be lots of variability in its effects between users," and DMT is not a "legal tryptamine RC," (at least in the U.S.) as the OP is asking for. I have used synthetic DMT intramuscularly three times. In my experience it's not nearly as rewarding as DPT or mimosa hostilis with harmala seeds, and on one of those three occasions I even tried IM DMT after swallowing and feeling the effects of 4 g of ground harmala seeds. My perception of DPT as among the most powerful tryptamine-based experiences is also reflective of my reading of, typically, quite a few trip reports of most every psychedelic I know of that I'm aware has been reported on, which I think is really what matters when anyone is asking a question like "what is the most/least" of any particular drug. The answer likely to be reflective of a random person's questions about unknown future experiences is the answer that describes the reported average of effects.
There is also Shulgin's testimony about DPT: