Because you look at the uniforms on a very surface level. If the uniform doesn't have any bulges or embroidering inconsistencies, you give it a thumbs up.
This has NOTHING to do with Nike vs. adidas.
It has to do with the storylines behind the uniform changes and whether the uniform maker has been responsive to tradition and preferences.
You just look at a picture and say "I like it". And that's fine, you're entitled to your opinion. But maybe, just maybe, don't always accuse people of being "Nike fanboys" because we respond to something that your surface-level perusal does not capture.
Maybe try reading the comments FROM TENNESSEE FANS. I've been friends (and former co-workers) with a Big 4 tax partner for 30 years who is a Tennessee alum, and they really really really like the Power-T on the helmets. It's like trying to change the split-U on our helmets. It will not end well.
I'll save all the other color and design choices for another day. However, I would say that I think that adidas went a little detail-crazy with the gray-on-gray shoulder detail that you really can't even see. Weird.
Was all of that too specific for you? Not enough "Nike rules, adidas drools" for ya? Is it a beautiful shade of gray, sure. But I don't expect a detailed-eye critique when you post.