I just checked this out and am very surprised by the rating you gave it! To have only 9 and 10/10 to play with for movies which have far more to them, not sure your scale is correct, but we all have different tastes! I went in knowing nothing about it, except Catwoman was in it and she's hot.
The first portion seemed okay and kind of what I was expecting, and even upto them realising what was going on but then when Sudeikis became 'serious', it just got terrible I thought. Very unnecessary.
Because Hathaway is hot, I gave it a 5/10, but that's admittedly a bit of a stretch. Wouldn't recommend watching, but when on sky movies maybe check it out.