No way are the Boston Celtics better without Ray. Don't kid yourselves. Ray's laundry list of consistency in big games against top opponents is nothing to just overlook.
What's more, What Avery did in that last game is something that Ray does all the time, and we can't ignore how important it is that Ray makes players from other team constantly chase him around, and you regularly see people who don't have the responsibility of guarding Ray having to pick him up and pay attention to him on just about every single time Ray goes running for a spot.
You can't replace that. There are many times when these Celtics are in desperate need of a big shot, and Ray goes out there and hits it for them. There are times when we could be down by much worse, and Ray keeps us in the game. When Ray's shots fall early, we are usually in blowout territory.