... What...? TP effects do scale linearly, why do you think I brought up crit based weaponskills... the only ones that really don't are either broken (exenterator) or poorly worded (anything with 'chance based on TP' as it's accuracy is actually based on skill level). I did mention the data wasn't verified, but the attack penalties on new weaponskills is reduced based on TP. the Amount it is reduced by was not confimed, but TP bonus should still be the best earring next to Brutal.
TP bonus is applied linearly for crit weaponskills, Moonshade adds ~2% crit rate to CDC at 100% and ~3% to VS/Ukko's.
And sadly, TP scaling linearly hasn't been written down properly anywhere. For Ukko's TP bonus will increase damage over str+4 pearl, post here by Ejiin:
http://www.ffxiah.com/forum/topic/19...up/36/#1768007
EDIT: TP bonus is also being applied to Blade: Shun, so you'll have to ask Mot how it's being calculated. It's certainly doing something however.
At any rate, the best MND earring is +4. Even Aesir is equal to/better than that, so the TP bonus only needs to make up for equal to or more than 3 attack.