Yes, but not in the ISO.
The "Extra Quality" version of Skyward Sword is achieved by taking that 100% NTSC-U ISO and running it through Dolphin with a Hypatia HD Texture Pack (which replaces the blurry Wii textures with 4k hand-drawn paint strokes) and enabling DirectX 12 Backend.
The ISO you are looking for is just a key. The "Extra Quality" is the lock. skyward sword ntscu 100 iso high quality extra quality
This goes beyond the raw ISO. It refers to:
Thus, a complete setup for "Skyward Sword NTSCU 100 ISO High Quality Extra Quality" is not just the disc image—it’s the entire ecosystem of enhancements. Yes, but not in the ISO
To ensure you have a working "100%" file, you should verify the file integrity using a checksum tool (like MD5 or SHA-1).
Why not WBFS? WBFS was a hacked file system to store games on USB drives for the Wii console itself. An ISO is the raw optical disc image. This tells us the user is likely playing on Dolphin Emulator (PC/Mac), not a real Wii, because modern PCs read ISO natively, while real Wiis prefer WBFS. Thus, a complete setup for "Skyward Sword NTSCU
This is the holy grail clause. A "100% ISO" means:
This is crucial. NTSC (National Television System Committee) vs. PAL (Phase Alternating Line).