Aye. I would even say that 1 good plagiarism report is equivalent to that of 200 low-quality post reports... if not more.
Finding crap posts is easy, plagiarism takes more time or involves having some program running to do it for you. For the average person, unless you have a lot of time I don't think it's that simple.
If I'm wrong and there is quick and simple way to find plagiarism, please point it out to me. On my own, I could not find a quick & simple way.
Thanks,
Dave