The issue of course is not about the Law, and not even with the actual right to be forgotten (right or wrong is another question), it is IMHO more about the fact that this (or that) search engine will have different results depending on from where you make the same search.

Now these differences may well be only for the searches related to someone who invoked his/her right to be forgotten, but the moment the results of a same search from different places can be different, it opens all possible avenues to remove (or add) other kind of information selectively.