You will favor those that used exactly same tools/frameworks/testing, but generally smarter person might get a disadvantage. Ie give me Intellij Idea and I woul

You will favor those that used exactly same tools/frameworks/testing, but generally smarter person might get a disadvantage. Ie give me Intellij Idea and I would be a tad slower since I use Eclipse primarily. This difference would be mitigated 2 days after hiring, but would be visible during interview. One tiny issue with the env can maybe block their effort measurably. I get the advantages, I guess everybody does, but there are disadvantages too.