Board Thread:Naruto: The Last Discussion/@comment-945885-20150113144756/@comment-945885-20150114141147

Well, we don't know how or when Hamura awakened his Tenseigan, or the extent of its powers, so its hard to say. The fourth character databook strongly implies that the Truthseeker Orbs are a sign of awakening the same power as Hagoromo (Six Paths Sage Mode / Six Paths Ten Tails Coffin Seal), so I suppose their strength should be similar.

According to the pixiv wiki, Hagoromo's Rinnegan governed while Hamura's Tenseigan governed.