That was quite a henshin for Erza, for sure. However, I don't particularly like that manner of fights where the enemies are nothing but basic grunts unable to use any fancy powers and thus beating them is like stomping ants. Doesn't tell anything at all about the true abilities of the person fighting them. You gotta have a named mage vs named mage in this show to see anything interesting.
However, otherwise it was a nice episode, Lucy trying to give Erza a good impression included. One great thing about the Fairy Tail guild is that nobody treats Lucy as a good-for-nothing newbie but instead like a full-fledged mage and member - although time after time that seems to surprise Lucy herself negatively; no avoiding of responsibilities and especially dangers allowed at Fairy Tail just because you are new.