There has been a discussion with a guildmate of mine that says that Wandering Plague has no ICD.
I say it does (as I have read here). So I tried to test it.
This is what I get by letting the diseases tick around 200 times each:
Refreshing through pestilence (one time pestilence reached another dummy but I quickly obliterated it to remove diseases. Also 2 times delay caused disease to fall off so I had to re apply them)
https://i.imgur.com/PO4QdWk.png
Refreshing through IT + PS
https://i.imgur.com/XyDJemW.png
My stats:
https://i.imgur.com/R4GgZf0.png
So as you can see it almost seems like Glyph of Pestilence is better (I guess this is just rng in this case, anyway they seem pretty on par).
Do you think this is a testing problem (i.e. I should have tested more like 3-5 times each, I should have more crit etc) or it may be a bug?