It depends, you said you went to go attack a NE in their base (i think) at night? Thats a bad move right there. The Wells will keep them alive durning the whole attack. Im thinking your talking about a solo game. Did you Far Seer dog rush first? Thats always a great thing to do to NE players(that and human tower rush them
.) IF the NE player does not know about the whole wisp thing, it works out even better.