So let me get this straight:
A movie focussing very much on art, and with a weird premise involving fantastical and surreal situations, didn't sit well with the conservative, Joe Blo focus group chosen by the studios.
Yeah, of course. Blade Runner died at tests and under the critics. It was a flop. I'm not saying that Suckerpunch will be anywhere near that film, but I hope that we all realise that when studio people say that a film is a 'failure' or has 'problems in the 3rd act', they are most likely talking about SALES.
The 3rd act is when popcorn gets munched more ferociously. It is the point where a lost audience can be made to salivate for a protential sequel, or tell their friends and family to see the film. It is the moment when every studio pushes for a happy ending, to have ambiguity removed, to rearrange the plot to that everything is 'clearer'.
On top of that, you can bet that Snyder's target market was probably not well represented in the test screening. It is typical for those viewings to be dominated by the lowest common denominator - they are a majority and therefore the most profitable to please, or so the studios reason.
Test screenings are what put Shaolin Soccer in limbo for years, and ultimately drove Miramaxe to slice it to ribbons. Test screenings are what made CLiff Hanger add footage to show that a snow bunny hadn't accidentally been killed. They are a joke, and they are only there to show the producers that the money they paid can be regained.
As an another example, Babylon A.D. could have been an amazing film, but again, studio meddling 'in the 3rd act', but also everywhere, and badly done test screening, turned what was to be an accurate portrayal of a cutting novel into rubbish. Alien 3's original form was so different to the 'Studio Meddled' version, and those who've seen the Assembly Cut can attest. Back to Blade Runner, studio meddling got Ridley off the project at editing, and the voice over added in and OUTTAKES FROM THE SHINING added in for a happy ending!
So anyway, rant over. I want to give Snyder all the chances he can to get these two films right. 300 was great, Watchmen was too. The deciding factor will be, as his films rise in costs, is just how much of the control will be relinquished to the accountants and marketing folk in the studios. Film making is so much politics.