There is just one aspect of what you posted and compared to, that really does not make sense here.
Weapons stats.
There is really no need to compare them.
Each weapon higher Tier is better than the previous tier.
And there are not that many weapons types, so it´s really not needed a compare function, that function makes sense in games where you have more than 40 weapons like Ghost Recon Wildlands, The division and games where you can buy many weapons and sometimes the same quality weapons have different statistics like in Dead Island or Dying light.
I do agree with the rest.
In the case you dont know how it works
From worst to best
- Gray (worst)
- Green
- Blue
- Purple
- Yellow (best)