beatit
First of all what is a empolion and if ur meant empoleon then no it is not easy actually it CAN be easy with an empoleon. i have one and i beatit!! what i did was pure luck though XP. in platinum i changed my tactics..... What i did was i MAJORLY leveled up a couple woopers that knew mud shot and mud bomb.(got the woopers in safari zone) electric attacks dont affect them so YAY!!!! then i challenged the gym and before i knew it i beat the leader!!
Cynthia will send out spiritomb first. get a Pokemon level 90+ with a dark type move and use that move twice. to beat her lucario, use a fighting type move on that to beatit. for garchomp use a dragon move. for gastrodon and milotic use a good grass move like leaf storm or frenzyplant.to beat her roserade use fire blast or blast burn. torterra is good for spiritomb, palkia with aura sphere is good for lucario, torterra is good also for milotic ang gastrodon. of course in fernape is good for roserade. dialga or palkia withdraco meteor or roar oft ime or spacialrend is good for garchomp