Quote Originally Posted by kyrios91 View Post
Not really an exact Math but if you check fflogs, WT / FnC each deals roughly 10% of a DRG's total DPS, totaling into 20%. It means that your WTs and FnCs are your primary source of damage after Auto Attacks (Around 20%).

The lance mastery buff is only for the bonus, so it's +100 instead of +30 on top of the 290/200 of F&C/WT

Assuming all positionals are hit, the totals are (because the bonus is only on the second one)

Before: 610
After: 680

So it's just over an 11% increase for those abilities together themselves.

If it is 20% of the total DPS, then it is an 11% of that, meaning the new potency is about 2.2%.