At 40.77 dps, Garuda's is the second highest dps axe in the game and is for that reason superior to the gc axes (both dps and tanking). Stat caps increase based on dps (not damage) and dps is the factor in weapon skill damage (again not damage).

The higher stat cap, however comes with the bruden that you actuallyeet it (it's something like 345-350 str and 310/315 vit). So you need to be able to meet those caps without relying on weapon melds.

Also the relationship between dps and caps + ws damage means relic is also best for dd. the 50 enmity should be no problem even for a decent non-relic tank.