Clarification Question

So, I was reading patch notes and came across this in the PVP section.

The tank, monk, samurai, and reaper modifier for damage taken has been changed from -20% to -30%.
The dragoon and ninja modifier for damage taken has been changed from -15% to -30%.
The physical ranged DPS, healer, black mage, and summoner modifier for damage taken has been changed from -10% to -15%.
The red mage modifier for damage taken has been changed from -10% to -15%.

Does this mean that tanks and melee (for example) are now going to be taking more damage or less?

I would say more Damage.

Less. -20% damage modifier is a 20% reduction. -30% is a 30% reduction.

These are changes from pre-6.1 values though. With presented numbers RW should feel similar to 6.1 Frontline.