Right, it's different.
Your coleslaw has more ingredients, is mostly white cabbage (different flavor) and particularly the use of mayonnaise changes the character substantially (and adds a whole lot of calories). The whole point of mayonnaise is to get a whopping lot of oil to stick to stuff (it's almost pure oil) producing it's own unique flavor and texture - way different than just lightly wetted with olive oil. Did you forget salt or is that another difference?
This is not to say your coleslaw isn't just fine and tasty - as coleslaw.
