The stance system was the thing I liked best about WHRP3e, sadly I didn't feel that great about the rest of the game (It's a fine system, I just prefer 2e)
What EotE changes, and does so really well I think, is it gets rid of the cards that were a big part of WFRP. This cuts down SO MUCH of the rigmarole of the game, from managing and selecting cards to tracking cooldowns, etc. (no "Delay" tokens, yay!). The dice are simplier too due to the lack of a stance system.
With the exception of the dice, EotE is much more traditional tabletop roleplaying than the prop-centric nature of WFRP3e