While it looked good, the plot relies almost entirely on the characters not being smart about things. Clearly they had moments they wanted to hit and didn't care how they got there. How can super serum be so important while the power levels are all over the place when the characters are fighting and often under powered. If a normal human with experience can hang with a super soldier, why isn't Bucky's experience worth anything at almost any point on top of often being less than super.