WieWaldi
Allow me to be a "God's advocate" for Vidal, I mean, to indulge in plausible arguments in favor of it.
Vidal is FREAKING HEAVY. When you have hammer simulators, the extra length of such parts will contribute to the resistance you feel when playing. Since the weights in the Vidal are not attached to any extension, the makers compensate that with a heavier load.
You may wonder, wouldn't that feel linear? That would be unlike a grand piano. However I have asked an owner in the VI-Control forum and he told me it doesn't feel linear. How that is, I can only speculate. Counterweight? Friction?
Anyway, I doubt big brands would want their instruments to be heavier than they already are. The MP11SE is lighter, even though it has much more electronic hardware inside it than the Vidal.
Another possible source of good quality may be the amount of manual labor assembling and regulating each unit. Maybe the more complex mechanism in other instruments are easier to mass produce without putting so many extra hours of manual labor into it.
But you may ask, if "more moving parts" means "more prone to break", why would big brands sell stuff that is less reliable than an unmovable slab of steel? (Unmovable if your frame of reference is the butt of the keystick) Well, if it breaks after 5 years or so, you're more likely to buy a new one. They don't want you to be a one time buyer.
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Now I'll be the Devil's advocate: it's a luxury furniture piece and all satisfied buyers won't even consider criticizing such expensive buy.
(Edited for grammar correction)