Batroc had good training, but aside from hopping around he was clearly human. And Cap held back in the beginning, which is why he was so surprised when Batroc turned out to not be a piece of fodder. Once he stopped playing he didn't last another 10 seconds.
Deckard isn't as strong, but he's near there imo and he won't hold back. He'll hit him hard and try to break him from the start.