1、这就是我对于这件事情的看法 This sentence emphasize 看法 2、对于这件事情，这就是我的看法 This sentence emphasize 这件事情。 the meaning is same but different the method of express.

I think there is no difference about the means between these two sentences. 这就是我对于这件事情的看法 is the common usage in Chinese. And 对于这件事情，这就是我的看法 . This usage is in when you want to emphasize on 这件事情, so sometimes we put it in the front.

No differences,Thanks.两者都是总结性语句，均可交换使用