I like that
Ducati are doing something different; but why the endless Harley references? The Diavel is not a cruiser; as soon as your measurements become power, weight, and handling, you're not discussing the merits of a cruiser anymore. You'd never attack the new 'Bonnie' for not being having a Y2K gas turbine engine, so why claim that Harley are somehow failing by comparison?
Here's the basic argument for the hard of understanding: Not everyone wants to go fast.
Neither does that mean that all you care about is a badge. For cruiser riders, it is about going for a ride they enjoy. They don't enjoy cramped seating, speed, hard cornering, worrying about speed cameras. What they like is feet kicked out, relaxed position, hands in the breeze, enjoying the ride. That doesn't require power, or helium-bubbled carbonfibre chassis, or sophisticated suspension; it just needs an engine, seat, bars, tank, wheels. Puts Harley "into the 1930s"; well good, 'cos I rather like Knuckleheads - but (again) MCN totally misses the point with cruisers.
Real Diavel rivals:
V-Max (bit obvious I know)
Rocket? (at a push)