We have touched on the Investigator criterion of NIH grant review in the past. I observe that it has little dynamic range because for the most part the investigators applying for grants are very accomplished. So when your summary statement talks about how awesome you are....
I take mine with a grain of salt. It has to be in the nature of "uniquely qualified to conduct these studies" before I get too stoked.
It is relatively rare that, by intent or accident, a reviewer manages to hit on phrasing that melds with my own view of my accomplishments. And lauds me very subtly on that basis. Not to reveal too many details but it has to do with the ability to get shit done under adverse scientific conditions. A recognition that I've done so on a consistent basis over an extended interval of time. So that feels pretty good.
Most importantly, however, this set of reviews appears to recognize that when I propose to do X, it is a good bet that I am going to accomplish something reasonably close to X. With the resources I've proposed to deploy for the project.