So many people are saysing TWHP doesnt look as good as expected. Here is an screenshot comparison between TPHD and TP on Dolphin Emulator in 1080p and also an comparison between windwaker HD and windwaker on dolphin emulator in 1080p.
In my opinion the port isnt as great. They should had added way advanced lightning and particle effect and change the colour tone like they did with windwaker, but decide yourself:
Video comparison:
Twilight Princess HD:
Twilight Princess Dolphin
Screenshots
Twiligh Princess HD:
Dolphin Version:
Windwaker HD
Windwaker Dolphin: