Since I only have the 16-300mm, I can't make a comparison. However, I think the values should be on par. I mainly take landscape photos and I am very enthusiastic about my lens. However, with such lenses with a very large wide-angle zoom range, you have to make sure that you always work with the smallest possible aperture. To get there professionally I recommend, Google then type in "test Tamron 16-300mm and then read a lot, same with the other lens.
You will see that both lenses have certain quality limitations.