You just don't drink bourbon, unmixed at least, if you feel this way. Had my wife swap around these three wheaters for a blind tasting and it took one sip of each to say which was which. And these all come from virtually identical mash bills, but different distilleries.
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I can do this all day. No different than someone that drinks a lot of beer can tell the difference between a lager, an IPA, and a stout. Now if you give me three glasses with no idea what they are, I probably can't tell you especially if I do not drink it regularly. But I will get you in the ballpark on age, mash bill, and proof.
I'm not special. Everyone that drinks a decent amount of whiskey can do this. We won't always agree, but we all can tell big differences.