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petrofied It's not the same. Even acoustic grand pianos among various kinds aren't the same as each other.
Digital pianos - even not hybrid ones - have their own powerful features and sounds, and mechanical control mechanism (coupled to the digital side of the system). Yes indeed, a lot have sounds that are recorded 'samples' - but then some special conditioning and amending and adding is done - some technological magic.
So - overall - depending on the music played, and depending on the person doing the playing - and the environment etc - even a digital non-hybrid piano (which is a piano, a real piano, just as acoustic pianos are pianos - also real piano - from which the essence is piano forte comes - shortened to piano) cannot be matched in musical 'fire power' and musical elegance.