That for them is like the Tea Party winning here....which is why some are calling it an “earthquake”.....it is.
The result will be the Parliament will not be able to ram-rod their agenda's through anymore. Not to mention additional countries moving to regain more of their sovereignty away from the EU as there will be less opposition.....thus the "Power" of the Eu will get shortchanged.
Like here, it will only matter if they can 1. perform and 2. hold those seats for a generation.