Whitman has a partially Taoist approach in how he sees things in this poem.
Yeah, he always makes a point to accept the good and the bad equally. Suffering along with happiness, heroes along with criminals.
I think that's why he combines the Wordsworthian take on nature with P.B. Shelley. It's pretty cool.
I think that his argument for human greatness being more powerful than God provides a unique look at how divinity and mortality is balanced
looking back at it, I don't think he was writing as more powerful than God, but on the same level as God.