There was a big discussion about this recently. The techniques are in many respects the same. With point and power you use the throttle to change speed but every time you use the throttle you have to do something with the elevator to maintain your picture (don't tell me you don't). With the other technique you do exactly the same but the other way around (if you see what I mean). Throttle and elevator are inextricably linked as far as approaches go; IMHO the whole discussion is predominantly a mindset issue.