Well we never did see the more improved winter soldiers at work. Just those short scenes where they beat the **** out of a Bucky in mission mode and then started killing the guards and everybody else in the room.
Bucky does clearly say they're all worse than him. So while they can topple a country from within, blend in anywhere better than him. I assume they are all stronger, faster, and more focused than him as well. They also seemed to be able to brush off their programming or sort of extend orders the way they started killing everybody and that guard giving the command codes was so shook he needed Bucky to escort him out.
I'd assume the super winter soldiers don't suffer from any weaknesses Bucky has; temporarily regaining memories, all that hesitation and doubt, etc.
I mean even in full mission mode he had one dumb plan when Steve was holding the helicopter
Instead of just swerve in and then out so Steve would lose his grip or get his arm torn off he tilted that **** all the way in trying to kill him the propellers with no plan on how to survive the helicopter crashing and washed himself (imagine if there was no water?
He'd die in an explosion).