User blog comment:B214/Volume 23 discussion blog/@comment-82.178.74.14-20170726162517/@comment-31137559-20170727161127

The Boosted Gear is still a mid-tier Longinus ITSELF. The strength of the Longinus itself doesn't take into account the one possessing it. All those forms Issei unlocked is ISSEI, not the Boosted Gear. A Sacred Gear develops and evolves based on the one possessing it. But True Longinus and Zenith Tempest are still stronger than the Boosted Gear. I'm talking about the Longinus themselves, not the possessors. Based on the abilities of the Longinus they are ranked differently. For example, Gram is the strongest demonic sword. But if a person who is a novice using Gram faces off against a person who has completely mastered another demonic sword and gets curbstomped by the guy with the weaker demonic sword, does that make that weaker demonic sword stronger than Gram? No. It's the one wielding it that matters.