Click HERE to see this thread with all of the graphics, features, and links.

I know Gorgon can generate shockwaves with a strength of 7.5 on the Richter Scale

if their battlefield is Yangtze River Delta, the most most populous metro area in the world, where lacks shockproof measures

does the shockwaves devastating enough for him to destroy these cities and take Jack?

No. Hawksmoor can just tell the buildings to heal themselves.

His strength/durability levels would be off the charts.

even Gorgon constantly stomping?
what if Shanghai collapse priorly

Jack can affect the gravity around Gorgon.

Jack is quite haxx in city areas. As Saint is mentioning, earthquake-level stomps, even at a constant rate, wouldn't be much of a hindrance.