Yes..both WODS and WROR plat Classic Hits. Yet, WODS plays more pop & R&B material than WROR, which leans more toward the rock side of Classic Hits. One can assume that ROR leans more male than ODS does. Which means, ROR really has no business doing all Christmas. It should be on the more female based station-----WMJX. And with Boston now on the PPM, MJX's ratings from December 9 (end of the paper diary rating period) through Christmas Day in what is called the 13th month for PPM would go through the roof.
It's cluster programming - WROR is being used to protect WMJX from WODS while 103.3 is all xmas. If WROR can siphon off enough listeners from WODS, then WMJX wins. Why sacrifice WMJX's ratings from the other 11 (or 12 if you count the 13th ratings period) months of the year, especially if using WROR can accomplish the same goal of weakening a competitor and getting more cume for itself (essentially what all xmas does - try and shoot the cume up in the hopes that people will stick around after the 25th).