Again, for building amber solo on BLM >->
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Again, for building amber solo on BLM >->
At 100% TP Martial will win. The answer is simple:
%fTP DMG increase = NewfTP/OldfTP
%Affinity DMG increase = NewTotalAffinity/OldTotalAffinity
Even if you're not using Cosmos/Banishers (Which diminish the returns of Yama), it's 30% v 45% increase. That of course, assumes wiki's Magic Affinity page is correct and Yama+2 gives 30% bonus damage.
Edit: However, it will vary based on atma.