There is some confusion around weapons that have been upgraded, largely thanks to RF Online showing an altered figure in the weapon screen after you have added a keen talic (or 5!).

It is best to completely ignore the upgraded figure in the weapon window.

To arrive at your character’s gen. attack on the Char screen. Simply grab the weapon’s base damage and then apply all the bonuses you have ie. Keens, Accessories, Pots, Archon Armour etc.

So a weapon with 0-100 damage, with 4 keen talics (50%) and a full perfect Accretian elemental set (120%) would result in a 170% all together. So your Gen attack would be 0-270.

The calculation being the sum of attack bonuses as a percentage + 1 * weapon attack.

As you can see, the higher the weapons base damage the more effect all these bonuses have, which is why Relic 55 weapons are so powerful for a well geared character.