Outstanding photo comparisons! The two quoted above, in particular, are really helpful. Thank you very much for posting all of the pics!
When I saw the comparison from behind, it struck me how tiny the HT jetpack looked. So, I put a publicity photo of movie Fett in between the HT and SS figures to see more clearly how the jetpacks compare. Yeah, the HT one is hilariously undersized, especially the rocket part.
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I think that front comparison pic is the best I've seen the HT helmet look so far (and even more recent images posted today are presenting it nicely too). Again, I put a movie Fett photo in between the figures. The HT Helmet matches quite well, but those gauntlets are an eyesore.
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In my opinion, Sideshow wins on jetpack, cape, and gauntlets. HT clearly wins on helmet; and also on boots, holster, knee pads, crotch armor, and rifle. But both suffer from the chest armor having shape and proportion problems, the shoulder armor being placed a little funky, and the jumpsuit not being tailored quite right.
At least we're at the point now where a mashup of the different parts can be used to produce a damn good Fett. This new HT figure brought a lot of key upgrade pieces into the mix.
Thanks again for the great (and very helpful) photos, SithThundercracker.