I'm playing at the expanded deck level. And I frequently beat decks that are loaded with EX's. The only times I lose are when there are some odd ball cards played - I can think of one recently where a stafium card was played where I couldn't use my ability to heal and another where the opponents active pokemon was immune from damage from any basic pokemon.
I'm sure as I get better cards I'll use them and move towards a more conventional deck but this is working pretty well for me right now.
I'm sure as I get better cards I'll use them and move towards a more conventional deck but this is working pretty well for me right now.