Mauritius email - Miles Plus Money... why?

Just had the email through proclaiming the new Mauritius route, and I'm still scratching my head at why anyone would use Miles Plus Money on this route:
Economy from £635 50,000 miles £541 + 2,000 miles
Premium Economy from £1,075 75,000 miles £981 + 7,500 miles
Upper Class from £1,475 100,000 miles £1,450 + 15,000 miles
So you can save £94 on Economy / Premium Economy, and £25 on Upper Class, by doing MpM.
Taking into account the fact that MpM fares don't accrue miles, the total cost in terms of miles for those savings are 14,148 (Economy not N class), 18,222 for Premium Economy, or 39,296 for Upper.
So, save £25 on your Upper Class flight, but it'll cost you 39,296 miles? Am I missing something here? [?]
I'm sure that there's a few routes that MpM can make sense, but I fail to see how VS expect anyone to take up this kind of 'offer'.
Thanks,
David.
Economy from £635 50,000 miles £541 + 2,000 miles
Premium Economy from £1,075 75,000 miles £981 + 7,500 miles
Upper Class from £1,475 100,000 miles £1,450 + 15,000 miles
So you can save £94 on Economy / Premium Economy, and £25 on Upper Class, by doing MpM.
Taking into account the fact that MpM fares don't accrue miles, the total cost in terms of miles for those savings are 14,148 (Economy not N class), 18,222 for Premium Economy, or 39,296 for Upper.
So, save £25 on your Upper Class flight, but it'll cost you 39,296 miles? Am I missing something here? [?]
I'm sure that there's a few routes that MpM can make sense, but I fail to see how VS expect anyone to take up this kind of 'offer'.
Thanks,
David.