User blog comment:B214/Volume 23 discussion blog/@comment-95.90.224.203-20170902105722/@comment-29963364-20170902182611

Ophis is, in no way, shape, or form, a "One-Shot Loli."

Yes, she was born from the "Infinity of Nothingness" in the Dimensional Gap. But that doesn't make her "infinitely powerful." Her concept of "infinity" just makes it so that she never runs out of power, but she can run out of steam (stamina). We've even seen that she can be damaged to the point of "losing strength" and losing conciousness (when Nidhogg beat in vol.20)

The DxD G form is similar. It has her "infinity" power, but that doesn't make it as powerful as her. Instead, it forces the full power of Ddraig (in his prime) in full force, and keeps it at that maximum. This is the "potential unleashed" aspect of Ophis' power (as we've seen when she gave her power to Diodora, Katarena, Crueserey and Shalba). This means that DxD G is actually as powerful as Ddraig (Prime). This is why it was such a close match between Issei and Apophis. Apophis & Azi Dahaka were indeed Heavenly Dragon-Class, but they were still below Ddraig & Albion in their primes.

And remember when Rizevim's [Sacred Gear Canceller] was completely useless? That was because of the "infinity power" in DxD G. "Infinity" can't be halved, reduced, absorbed, or even cancelled. But that doesn't mean that it is "so powerful it overpowers any defensive ability." The concept of "infinity" just makes almost any defensive ability useless against it. This is also why Issei's [Infinity Blaster] + [(Infinity-Enhanced) Longinus Smasher] overpowered Apophis' Darkness. Apophis wasn't actually very durable, so he used his darkness to absorb and dissolve any attack used against him. But since "infinity" can't be absorbed or dessolved, it was usless against Issei's attack.