Sorry I thought you were talking about Pride of Aesir but called it Frost Giant Garb. I’ve been back playing CE only in last May after a stop from last October, and I didn’t remember you could delve the Pride of Aesir for it.
On the CE Wiki it says that :
Frost Giant’s Garb
(No resistances, +2 Vitality +3 Strength, T4 Epic +6 Vitality +8 Strength)
For me it means it’s epic in stats but not in name since you must craft it on the T1 or T2 benches.