IGN Wii guys thanked in the Conduit's credits. Possible bias in review?

[Ari_Gold]

Nintendogamer said:

Ari_Gold said:
yeah pretty much, i wrote this a week ago, this makes the ign review look unprofessional, and its too much of a coincidence that ign gave the conduit the highest rating....

Nope IGN has given the 3rd highest, worth playing has given the 2nd highest. Bigbag has given the highest, they gave it Grade S which is more than 9/10

what type of credibility do those sites have?