Guild Wars 2

This is a display bug for the tool tip, I have just reproduced it.
If you slot Rifle Mod (+10% rifle damage) and Rifled Barrels (rifle range increase) the displayed leap damage value is multiplied by 10. In your case it should be 948 leap damage and 1896 landing damage. You can check it yourself, just change Rifled Barrels to another trait, and you will see the correct values.
If I remember correctly, this bug was already removed in some older patch, looks like it’s back again.

Thank you I’ll bug report it

Already did & linked your original post