Innova. Why it is so popular despite having poor engine parameters?

Innova is hugely popular and has been lavishly praised by GTO and others despite its plain jane looks, high prices, apparently poor engine parameters (102BHP, 200Nm max torque). Can somebody enlighten me why Innova has so much less max. torque (200Nm) (almost equal to a Swift), while having such large cubic capacity engine (2500cc to Swift's 1300cc)? Even the power is not much. Is it due to it being an obsolete technology engine? I am sure there is some catch which I am unable to understand. After-all it is not selling in such huge quantity for no reasons. - Is the torque enough to make Leh ladakh kind of trip carrying 6+ adults? - If it has obsolete inefficient engine than why it is still so popular, selling almost double than Xylo which is much cheaper? Thanks and best wishes.

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