There is RARELY ever a time the extra pentamelded stats are better for DPS than the higher main stat. This is more common with tanks who could pentameld STR, we can't do that. Based on suggested current stat knowledge, CH is really bad, and doesn't start getting good until over 2000 CH... which is tough to do. Det is alright, but still not enough to compensate for losing so much INT. The stat weights on Ariyala's are from last tier, and are extremely wrong for this tier since they re-balanced secondary stats. Stat weights for SS are now equal to about .167 (best estimates), where it used to be .283.
Even if there was an ornate belt (which there isn't) that allowed for 5 materia 6s, the belt still probably wouldn't beat the Omega belt. It does seem to slightly beat out the creation belt, but not by much. Just stick with the 340 gear.
