Some EPC churches are more conservative than PCA churches, and some are a little more liberal. There is just a lot more fluidity between churches. There are more non-essentials that each church can decide for themselves. From what I've seen and learned from my short time as an EPC congregants, women's roles and charismatic gifts seem to be the largest differences I've found. I've seen no signs of serious liberalism and they have very strong convictions where they count.
I understand that a lot of the folks here have serious concerns with the EPC, but I think some of those concerns might be a little premature.