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You are missing:

 

• The Tamrob was tested on a 10MP APS-C camera. The Nikkor on a 24mp FF camera. From the Tamron you only know that its performance is sufficient on a low MP APS-C camera. It is like comparing the center test from a 15mp FF camera to a 24mp FF camera. A lens can seem sharp on lower resolution, but on higher resolution it may show its limits.
  
• The Tamron was trested many years ago. Different RAW converter, different version of test software, it all makes comparison tricky.
  
• The Tamron has been tested on APS-C. The lens' weak border/corner performance on FF is not shown.
  
• The Nikkor is faster, you can use it with bigger apertures.
  
• Besides all that, the Nikkor has better AF, better coatings, better CA performance.
  

 

The only thing you know from the Tamron is that it was quite an impressive lens way back when 10mp APS-C was the norm.