What I think separates Thunderhawk from its classic indie rock forebears (Guided by Voices, Pavement, Wilco) is that those bands had an effortlessness and a sublimated perversity. To take that apart, Bob Pollard of GBV sounds like he could write a memorable and catchy song in his sleep - or as is more often the case, while exceptionally drunk - and record it in a damaged way that makes the damage seem essential. And while there's a definite perversity to his work, it's run through various filters, becoming violent imagist poetry instead of just stories about beating someone up or putting coke on one's dick.
Thunderhawk just talks about putting coke on one's dick and shooting people - without that sublimation. And, except for a couple ramshackle country tunes that evoke early Wilco ("Dead is the Drunkest You Can Get" and "I'd Still Burn"), they sound like they're trying too hard, working up slavish pastiches with overwrought vocals, never quite transcending multi-tracked, basement recording conditions.