AD9361 RX performance with Single Ended vs Differential

I (we) have used several of the AD9361's in various designs over the last few years.  Past designs where using baluns to go from a 50 ohm RF trace to a differential signal attempting to best match the input impedance of the AD9361's ports.  We had a design which required compact design which we did not use a balun and ran 50 ohm impedance directly into the AD9361 input.  

With a recent test between two different designs, there was quite a few differences,  none the less we saw equal if not a bit better performance on the CCA we ran single ended into the AD9361.

Does analog devices have performance or data showing the performance benefit of running differential vs single ended? 

Thank you,