I also quite enjoyed this story, thank you for posting it.
The comparison's to TDK are quite reasonable, but only in a more thematic sense. In the stories both Batman and Spider-man have lost their ways and initially try to find their path first the wrong way, pushed down by their villains. Yet in the end they both remember what made them powerful in the first place, not because they were physically powerful or capable, but rather their mental drive and qualities. In the end both stories also reflect how different the mentalities of the two characters are.