Eternal Flame is not restricted to one person at a time. Sacred Shield is. When I did my calculations I didn't assume multiple applications so that would tip the scales slightly more in favor of EF over WoG. If you coupled EF with Holy Avenger and put it up on a lot of people it could be situationally quite strong for burst damage periods (Lei Shi Get Away for example).
I haven't looked at all with how the numbers look for glyphed LoD if anyone has that but I suspect it will be similar to the unglyphed that I did since the intent was to have the penalty be less for smaller raid groups.