I updated the Weapon Skill Enhancement Calculator. It now shows how 2 x RGrails can sub for SRs as donor weapons at intermediate skill levels. I also show options for using the next higher skill level for a donor weapon, which often achieves some savings (for example, you save 1 R by enhancing a SLVL-19 SSR weapon with an SLVL2 SSR donor weapon instead of SLVL1 + 3 Rs).

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I've added a new section to the Assault and Eidolon Effects Calculator: Weapon Comparison. Given several parameters of a team (team 1), it will tell you whether subbing out your existing weapon (Weapon 1) for a new weapon (Weapon 2) will increase your team's damage output, and factors in assault modifier changes and level differences. This should prove useful for those compiling secondary teams, who will have to decide whether to sub out high-level off-element weapons for low-level same-element weapons. It should also be enlightening for those wondering how SSR weapons that aren't limit-maxed will compare to limit-maxed Disaster SRs.