I know Synth o'man , I'm in contact with him on Facebook. In this piece he has, for some reason, not used the newer SRX 04 except for one track. He didn't make use of any SN-A tones either. With the old, mostly heavily looped SRX 06 strings Roland cannot match Kurzweil. It strongly depends on the piece, too, here vibrato solo strings seem to be important, e.g. in a Beethoven symphony or many soundtracks the straight sections are more important.
Edit: Just got to listen to the Kurzweil example. Surprised to say I don't like it better. The straight non-vibrato strings used sound synthetic in the high notes.
I'm tempted to try the first bars with a strings mixture of my own...