Conflicting Advice on crafting a +2 Physical Spells Wand

I googled "crafting a +2 Phys wand" and about 4 million different posts say this is a deterministic craft - they all say some version of:
"Roll +1 all Spells. Multimod, cannot roll attack mods, prefixes can't be changed. use harvest "augment physical" to guarantee +1 all physical gems. " There are reddit posts from Affliction league confirming this advice.

But when I do this in Craft of Exile, I get "Phys damage over time" most of the time. POEDB confirms this mod has a higher weight.

What gives, why does everyone say you can guarantee +1 Phys Gems? I must be missing something...

I'm in SSF and its taken ton of effort to get the resources to try this - I *really* don't want to brick it....

Thanks :)