I agree that they are pretty different watches. If getting both eventually is an option, I think they are definitely different enough! The j12 is a pretty large substantial watch and is unique looking so it will most likely draw a lot of comments, while Rolex is a bit of a more classic, traditional style watch. I think that a larger size Rolex can also have a simialar more sporty oversized look as the j12 if you are looking for an attention getting watch. However, I have a ladies size Rolex and I get compliments on it all the time!