Yup, and as you can see that's over 2 weeks old. Since then it's become apparent that even when the caps are not necessarily met, the DPS value is already the most potent stat in determining WS damage and therefore increasing DPS alone on weapon is a prudent investment.

My argument for Light Shot in the case of Garuda vs Ifrit is that although the Damage on Garuda is lower, the delay is lower to a greater extent. So while your individual LS will hit for less, the rate at which you fire is not just proportionally faster, but much faster allowing your total damage from Light Shots to increase as well.

The only skills that are less effective for picking Garuda's Spine over Ifrit's Bow on the long run are Barrage and Quick Nock... however for BRD Quick Nock is not very often used at all due to it's cooldown and lack of Keen Flurry. Personally, I feel like the overall increase in damage from every WS as well as overall damage increase from Light Shots in the long run outweigh the decrease in damage on Barrage, and my testing proves me this with my damage output/DPS increasing ever since obtaining and properly using Garuda's Spine.

I will say however, being that it is a lower delay bow, it requires more on-hands management and may have a bit of a learning curve. Like I said before, I made a Light Shot Macro to hit between weaponskills to keep the CD on LS without having to move across my action bar from LS to WS to LS... (gamepad).