Q:
Crafting Booster doesn't affect discovery?
A:
Discoveries are always critical, so having a higher crit chance on crafting (such as the booster gives) has no effect on discoveries.
Wrong. These are all the sources of bonus experience on a craft, and they are additive.
Masterwork + 100%
Rare + 225%
Discovery + 100%
Critical + 50%
A discovery will double the experience from an exotic craft, aka give you 200% cxp, while an exotic discovery that criticals will give you 250% cxp, or 25% more // + 50%. A discovery of a rare item will give you (100+225+100) 425% cxp, meaning the discovery only increased cxp by ~31%. A critical of a rare discovery would give you 475% cxp, or an increase of ~12% for the crit.
Also note that exotic items have different base cxp and ranges that they are valid than all other items.
Updated every 20 minutes based on current TP prices.
Correct. only gives extra exp on non-discovery combines or refinements
Craft booster only affects your chance to get a critical while crafting. A critical can occur at any time, even during a discovery, while your chance to critical is greater than 0%.
Updated every 20 minutes based on current TP prices.
Discoveries are always critical, so having a higher crit chance on crafting (such as the booster gives) has no effect on discoveries.