It is similar but definitely a modified system. You no longer add all the dice together to generate a sum total.
Instead you group the rolled dice pool into totals of 10 or greater. If you have 4 Ranks in a Skill sums of 15 grant 2 Raises (but Sums of 10 still grant a single Raise too)
Example 1:
Finesse 3/Ride 2 - 10, 3, 2, 6, 7
Leads to 2 Raises (10, 7+3) with the last two dice (6 and 2) not contributing to success
Example 2:
Panache 3/Convince 4 - 10, 6, 7, 2, 9, 4, 1
First the player re-rolls the 1 (Can re-roll a Die with a Rank 3 Skill) and gets a 5
Next the player groups them for 5 Raises (10+5 for 2 Raises, 7+6+2 for 2 Raises, 9+4 for a Raise)
In Second Edition, Actions and Tasks can have a variety of outcomes with Raises used as the "Currency" to achieve them.
Tasks can be complex beasts with a certain base number of Raises needed for "basic success" and other Raises used for avoiding damage or complications as well as taking advantage of fortuitous opportunities.
For example, a single Raise might let you accomplish your task (running across a burning ship's deck). 2 Raises are used to avoid taking damage from falling debris. A fourth Raise is used to describe you sliding under the swinging mast, picking up a cutlass lying on the deck as you do it.
I can see the Dice System being challenging to implement in FG. With the resolution process involving choice, multiple outcomes, and narrative improvisation, I see it just being best handled by GMs and Players without automation.