Quality Score column in AdWords

This is a new development that some accounts have now been upgraded to - a column that shows the Quality Score of each keyword you are bidding on. If says either 'great', 'OK' or 'poor". Seems a bit redundant - 'poor' keywords are the ones with ridiculous minimum bids attached them, & 'great' or 'OK' will show if you bid above 5 or 10 cents.