My calculation went off by 2 materia, its 1440 stats from melds not 1560. These are all materia included into eq, and i compared when someone has all tenacity and all direct hit.
So its 4.3% for damage, mitigation and hps for tenacity and 6% for direct hit, with 1.7% difference between them.
I took 2500 tenacity as a example, because i have 2000 on my undergeared tank so it is safe to say it will be about 2500 without any materia.
Self healing i guess its what has been proven to work, which does not affect the other player healing. But if it is, then its even better than i thought it is.