[ANSTHRLD] clear or not?

[Ron Knight]

RfS X.4.a. Field Difference states, *Significantly changing the tinctures, direction of partition lines, style of partition lines, or number of pieces in a partition of the field is one clear difference.* And then, *In general, if the tincture of at least half the field is changed, the fields will be considered different* but also states, *There is a clear difference for reversing the tinctures of a field evenly divided into two parts, per saltire, or quarterly, but not for reversing the tinctures of a field divided in any other way**.isn't this then saying the two parts switched counts only as a CD for per saltire and quarterly but does not include per pale as being a difference?
.
Modar