umm...

[Usun]

Most Philosophy relics will still be slightly better than Titan's weapons, why? Because they are purple.

Just compare the level 70 greens to the blue ones, without Materia melded, the blue ones are normally better. And weapons, so far, do not have Materia slots.

Some might be chosen over the other depending on the stats, but overall, the normal philosophy relic should be slightly better.