Ah, vibrato is going to be the same on any workstation. It isn't really the vibrato. Nowadays the mod wheel is assigned to all kinds of things and not just vibrato. Quite normal. Quite easy to change as well. On any synth.
On MOtif/MO synths vibrato should be assigned to aftertouch. For most sounds that need vibrato anyway. The mod wheel does all kinds of things. controlling filter cutoff, FX etc.
When you get the MO take a look at the manual. Just so if you do come across presets that don't even have vibrato you'll know what to do. It's not rocket science.
cheers,
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