again, what does it matter if the whole field loses stack height? no one has answered this question. we trade watts for rollover if the field finds 32 to be advantageous enough. people are talking like they have ran the tests but it simply comes down to the efficiency of the larger wheel vs power lost through geo changes. obviously this will be course and rider dependent but saying "less power in that position" doesn't account for the rest of the equation. and "fit" in terms of rider preference of what feels nice, well those XC bikes aint ergo so...