The speed guns are really finicky, by the way. In India RP Singh was apparently bowling at 145 kph regularly when Shoaib was bowling in the mid 150's.
I pay close attention to speed guns. RP Singh bowls short spells in the 140kph areabut in prolonged spells or spells after the first, he is at 135kph. I have never seen him bowl a ball at 145kph but Sreesanth certainly has bowled in that area. However, after the first spell, his pace drops to the 130s kph.
True that the speed guns seem to time higher in India. I think it is something to do with altitude and air thickness or something like that.