If there's an improvement of the video going through the AVR, maybe it won't be noticeable :huh:
It will be a good idea to go through the AVR to avoid using multiple cables, just use HDMI from Wii to AVR and then HDMI from AVR to TV (specially if you have more component going through the AVR).
If you connect Wii to TV, you'll need an HDMI or component cable, then another cable from Wii to AVR for sound and you will also need another cable for audio to the TV if you don't use HDMI. :yes: