It certainly is a beautiful - almost as good as the Channel Islands....
I'm highly skeptical of the last part of your statement. However, I have not had the opportunity to visit the Channel Islands, so I will reserve final judgement on your claim.
For that matter,I have never been in Prince William Sound, although it may have been fly over country on my one trip to Anchorage. And possibly my attitude is just a wee bit provincial - "my mind is made up, don't confuse me with facts...."