Agreed that the bat-makers shouldnt really advertise that way if they really do reserve certain clefts for the pros.
But, imo, it doesnt really matter since its the podshaver that has more to do with the making of a good bat than the willow itself. A decent grade 2/3 cleft could still wind up as an excellent bat if its in the hands of a Julian Millichamp. IMO, it would be impossible to differentiate between the playability of said bat and one made from willow reserved for the pros.
From the JS Wright website:
"The only main differences in the grade are the varying degrees of brown wood and / or butterfly stain plus the number of blemishes or knots on the bat. Generally the more colour in the bat the lower the grade, there is however negligable difference in the playing ability, it is purely a perception that if it looks good it will play well, this is not the case."