The Mossi B Mk 16 can be caught by a few aircraft up at 28,000 ft, its best altitude. Up that high, you are moving at over 400mph TAS if you are void of bmobs. Even if aircraft get up that high, you will have been sailing along at 405 TAS or so and they just might run out of fuel trying to catch up.
The 4,000 lb "cookie" is good for a lot of things, not just "score" as the chart maker himself proclaims.

If you are able to get into the area safely, use them vs CV's, shore batteries, HQ runs, etc. Just remember the faster you are moving and the higher you go the larger the the impact zone becomes.
Me? I think the perk cost is too high. I'm sure Lusche can produce a chart showing how much it is used vs other medium bombers.
