Yes, but you must not forget to take into account the problem user Phantasm reported: It looks like the wi-fi chip may be left in a weird mode after you disconnect. There may be other problems too for all we know. All this could make the 10mW/100mW setting affect the battery drain. But with a proper functioning wi-fi chip it shouldn't. So, all we have to do is wait for a firmware fix for this, and then we can go back to proper 100mW (except in countries which must use 10mW).