Yup. There are some situations xONEx is better and some where xRWSTARx is. When you consider the rule differences it isnt too hard to think of some examples.

Most mileage flown - xONEx
Surface segments - xONEx (count towards mileage limit on xRWSTARx)
Most flight segments - xRWSTARx
Backtracking between continents - xRWSTARx
Lots of flights on a continent - xRWSTARx
Specific places to go - depends, some better served by OW, some by *A
Multiple trans-continental flights - xRWSTARx
Less non-fuel surcharges for specific flights - xONEx
More non-alliance codeshares - xRWSTARx
etc