I think the question of "which film is better TPM or AOTC?' is akin to 'which tastes better horseshit or dogshit?'
Either way it's still a pile of shit in your mouth.
For me I'd say that from a film making and narrative standpoint TPM emerges as the slightly better product. It's a more cohesive whole where AOTC feels like it was slammed together out of the poorly shot leftover parts of something better and edited by a Rhesus monkey with ADHD.
Not that TPM is in any way an enjoyable experience but it's a slightly preferable one, like having to choose the method of one's own execution.
I realise that in some ways AOTC is trying to pander to what it expects a Star Wars fanbase would like to see but I feel it does this at the expense of the narrative and characters. It's a bit like Star Wars porn; poorly written badly acted scene, ACTION, ACTION, MONEY-SHOT, *wipe*, atrociously written disinterestedly acted scene, MORE ACTION, MORE MONEY-SHOTS!! *wipe*.
Maybe I'm just a jaded OT fan who invested too much significance in the minutiae of films I saw in my youth in the late seventies and early eighties or maybe I know what I'm on about and George Lucas should never be allowed near the business end of a pencil, let alone standing behind a camera attempting to direct actors.