Hi, MORAs in SimBrief navlogs are not the same as the grid MORAs in Charts.
Grid MORAs consider terrain within the entire grid, whereas SimBrief navlog MORAs only consider terrain which is within 5 miles of the planned route. The additional buffer provided above the highest terrain point might also differ from the method used for the grid MORAs, especially in the case of very high terrain such as this.
Note how the highest point within the grid is outside of the 5 mile corridor of your route:
Best regards,