I do like your new cross count method actually more! I do not start the mathematics now, so I do not know after 1 day if the result (+3) is accidently the same in both measurement or it will be different. We will see. If it is the same then it would not matter which way to use, if it is not the same (I would think this second option will happen) then I like the second. There is something though to keep in mind in the second measurement: a Major currency can only move between +3 and -3 and a comm currency can move between +5 and -5. So the extreme level is different and commodities are more likely to be on the very to or very bottom and majors have more chance to stick in the middle.