The description of Sharp-as-Night's Sleetmail skill shows the following:
1802 appears to be a value that scales with the player's level.
This implies that the skill grants a weaker version of Major Resolve to Sharp's allies, but actually, the player receives the normal version of Major Resolve granting 5948 Physical and Spell Resistance.
Resistances without Sleetmail active:
Resistances with Sleetmail active:
The character page also properly shows that the player received Major Resolve, increasing 5948 Physical and Spell Resistance.
This bug may be because, on PTS, Sleetmail's description stated
"Sharp-as-Night conjures ice armor for themselves and their grouped allies which grants Major Resolve, increasing Physical and Spell Resistance by X for 5 seconds." That is, instead of the usual "companion receives 20% less damage," Sharp gained a scaling amount of Armor. Based on the way the skill functions on live, I assume that Sharp gained a variable amount of Armor while his grouped allies received Major Resolve, but the tooltip erroneously displayed the amount of Armor Sharp received in place of the normal values for Major Resolve.
Since the skill no longer grants Sharp Armor directly, the tooltip should be updated to display the proper 5948 value for Major Resolve.