It's easy to make the case that TP is better than OoT is, but you have to remember the games were released 8 years apart.

When OoT came out there was nothing like it out on the market. OoT set the new standard for action RPGs and some people would say 3D games in general. When it came out, it was the best game ever released in many people's eyes.

Now Twilight Princess, is a great game. It does a lot of things better than OoT does, but it also was not as revolutionary, original or unique as OoT when it first came out.

That's why a lot of people have trouble getting past the greatness of OoT, because we remember it as such a special moment in gaming.