There are a few things to consider, Macron was pushed forward by the elite whereas Le Pen opposes a lot of it. It all depends on whether the people can see through. Of course Le Pen could always be a decoy.
You forgot to clarify who is sponsoring Marie Le pen. The French understand that everywhere where on the horizon looms the shadow of Putin need to wait for traps. There is not a single rich country which is located in the halo of influence of Russia.