User blog comment:IamJakuhoRaikoben/Sorcerer Magazine, Issue 45: September 2015/@comment-25693405-20151017042430

Wendy vs Lucy could really go either way, as far as I can tell. Wendy can't really use dragonforce since Lucy's spirits don't really have air moves. What it really comes down to is Wendy's speed and whether she can dodge/withstand Unarometria. Since there's no way to gauge how powerful Unarometria really is, there's no way to definitively tell. Even with Wendy's Dragonforce, we still don't know how that compares to Lucy after the time-skip. In fact, we don't really know how any of the FT characters measure up after the time-skip. since they haven't had a chance to fight each-other.