Pinnacle's flat line is -05, so Cavs -3 1/2 lay -08 is pretty much like Cavs -3 1/2 lay -15 any where else, -3 1/2 -115 is basically the same as -4, so not really anything wierd about that number.
On the total the middle line ac**** the board is 198 1/2, 199 under -115 would pretty much be the same number, in Pinnacles -05 flat terms, under -08 would be about the same. So as Apollo says they want over money, or they like under, or both.