quick question regarding wipe

[vPro97]

I am about to flash CloudyG3 1.3 on my G2. When wiping, do I wipe system too, or just data, cache and dalvik?

 

[redduc900]

Full Wipe (Dalvik, Cache, System & Data)

 

[sai777]

I am about to flash CloudyG3 1.3 on my G2. When wiping, do I wipe system too, or just data, cache and dalvik?

Which is essentially factory restore or the 1st screen in twrp when you click wipe.