PBA patterns are not even close to sport shots for the most part.  They are designed more or less to force players to use certain lines which in theory are determined by the wear on the lane surfaces.  In theory they make use of the least worn parts of the lanes to give a "fairer" shot.

Then there is the U.S. Open.  Now that's a true shot.  No hold, no recovery, you just get what you throw.  I like it!  It is the sport shot of sport shots.

To my understanding, pba shots don't need to be sport sanctioned shots.  Like has been said, the cheeta pattern and certain regional patterns have a very high scoring pace and do not have the 2:1 ratio that a shot needs to be considered sport.  njv29 gave a good description of this in his reply.  To add a bit, the TOC was bowled on a 50 ft sport shot and had some of the highest scores this season.  This is just a testiment to the fact that while sport shots are taylored to a higher difficulty level, at times they can break down and be easy, easier in fact than shots with a higher than 2:1 ratio.  PBA shots, to me, seem to try to highlight a player's versitility.  They try to force a player to use multiple lines and angles that are out of the normal league shot.  At times one may need a high level of accuracy, in shooting a simple line, a testiment to this is WRW with his 40 titles, but it seems as though the current way of thinking is to go less for this type of dead on accuracy and more towad versitility, a la Norm Duke who probably had the most successful year.  (TJ was just better on TV, which is a crap shoot to a great extent.)
--------------------
four fried chickens and a coke[/size=4]

The PBA did the right move in naming their patterns & also posting their patterns on graphs.....the USBC needs to do this also.....I see tournaments all the time advertising sport shots....But what Sport Shot?.....The word "sport shot" can mean just about anything....I'll call on the phone to the tournament director & ask for the lane oiling pattern....they always answer a sport shot but can not tell you how the pattern is applied....Once again the USBC is clueless????If they are going to name a condition "Sport Shot"....DEFINE IT!!!