It isn't all about quantity though. Sure it looks impressive, but quality also is a major contributing factor.
Aye. I would even say that 1 good plagiarism report is equivalent to that of 200 low-quality post reports... if not more.
The main reason why I have garnered my series of reports is because I track down users and threads with consistently bad posts. If someone did the same but only sought out plagiarism, I would personally put their contributions above mine.