@Kepekley23 It's joules per metre, not joules per square-metre.
So average humans are 1.77 m, and their arms are 65 cm IIRC?
0.65/1.77*2.7432 = 1.0074 arm length
0.65/1.77*3.6576 = 1.3412 arm length
0.65/1.77*4.572 = 1.679 arm length
According to
this:
"In throwing an effective punch, a human-shaped being would have swing back the arm to a distance equivalent to its own length before moving it foward. Thus, Machamp has to cross twice the distance of its arm length for each punch. If you have a problem with this analogy, note that I am mostly following the example of preceding punch speed calcs in this train of thought: I'm very sure ChaosTheory has done one or two punching speed calcs himself, ask him for verification."
So the force is applied from a distance twice Hulk's arm.
1.0074*2*837861.69 = 1 688 123.733012 Joules,
Wall level
1.3412*2*1117028.52 = 2 996 317.3020478 Joules,
Wall level
For his 15 feet form it's irrelevant, he already has a City Block level feat.
So Wall level for 9-feet Hulk and 12-feet Hulk. Underwhelming.