Most, if not all of the samples used to make an SA2 voice on a tyros is included in the Montage and even the Motif XF...
They just dont work as automatically as they do on a tyros.
The Montage and XF are not designed to be as automatic as the Arranger keyboards to give the user more actual live control.
For example in the SA2 guitars on the Tyros u get random fret slides which are not naturally true to the real thing...
With the Montage and XF you have the live control buttons and knobs to bring in these parts in realtime.
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Roland G70 / Roland BK9 / Roland GW-8L / Roland Fantom O6 / Yamaha Motif XS / Technics KN6500