Wow, no I did not realize they were the same. You changed my whole world-view. Don't come at me with this basic stuff man..
Yes, in Christianity Jesus is God. This doesn't mean that Jesus himself put down the original laws. Jesus is Gods son and therefore he's God in another form (father, son and holy spirit). It doesn't make sense to say that Jesus was shytting on the laws he, himself had written as he was created after those laws were created. If you can't understand the concept of the father, son and holy spirit it's difficult to explain this because you need to understand this and not simply just say "Jesus is God therefore the message he preached in the new testament contradicts the message he preached in the old testament".
It wasn't that he completely neglected every law by God, he simply meant that jewish people DID NOT have to live by these laws as they were created forjewish people. Jesus was mostly preaching to heathens (every non-jewish person during this period of time). So if you consider who he's talking to, it makes sense that he would say that you could do work on the sabbath. Again, I can't stress this enough, the laws in the old testament is for the chosen people (jews). Jesus was sent to talk to everyone. and came with a different
message than earlier, i.e. you've heard eye for an eye but I tell you to turn the other cheek etc.
And to further clear things up, the work he did on the sabbath was to heal someone on the sabbath. That's the evidence we have of him working on a sabbath.