All FTP MMORPGs are the same in this regard. Higher level dungeons cannot reasonably be done at that level by players who dont spend real cash on the game. How many players can honestly say that they could run lvl 60 trials at lvl 60 without any cash shop players in thier party? There will be some, but not too many. It's part of the FTP strategy, so that the top gears are only available as drops to those who support the game finincially.
Believe me, from past experiece, EE is not as bad as many FTP out there. I can name a few where a party of 5 plaers max lvl with maxed out gears have a hard time in later instances, not just the higher leveled ones.
I have unfortinatly not entered any heroic 65's yet, but from experience of many earlier dungeons, I look forward to finding ways to do the seeminly impossible and finish them without the aid of real like money ( I dont mind spending money in cash shop, but I just love the challenge of not doing it here and still reaching the top)