As I said in another thread, RB just does it better (or more intuitive). They are two different tools and sometimes RB really excels.
Bass, one rhythm guitar, EP and drums (and probably other tracks) generated in 7/4 in this experiment from many years ago
I thought the name I came up with was fun as it can be taken a couple ways, but for a musician it means something different .. count it .. 7/4
The image shows how tracks just line up and work in RB in odd times .. the ancient 5/4 styles in BiaB still do not work, as they try to squeeze the odd time into a standard 3/4 or 4/4 measure, but RB does the actual odd time changes as expected with other styles .. at least in my experience
http://masteringmatters.com/stuff/Count_Me_Out.mp3SEQ file available upon request for educational purposes
It's great to see interest in odd time stuff, as I have always enjoyed that personally