This is an excellent comparative test, it is great to see this info published!
I don't know what other tests are still to come, but just FYI, this test does tell only part of the story. The IR LED source used here is probably a very narrow slice of the IR spectrum (around 880 nm? just a guess). So this is really just one data point (but a good one) on an extended curve. In most "real" scenes you will have the entire IR spectrum, so you care about all the different wavelengths of IR that the Red sensor picks up (I'm not sure how much that is). If any tests were done looking at color shifts with tungsten lights, day exterior, golden hour etc. that will tell you more about the "full spectrum" response.