May HAS proven he can get big league hitters out, something neither Berrios nor Meyer has done. Granted, Berrios has not had the opportunity. Regardless until one of them comes up and actually performs he's a hell of a lot closer to being an ace than either one of them. It is also highly unlikely that anyone who will leave Florida as a member of the rotation has a better chance of being an ace either. As far as Berrios & Meyer are concerned, I'd have no issue with the two of them and May being part of our rotation by the end of this season and for many years beyond. As far as who gets to be considered the "ace", it's all just semantics anyway, let them decide that over the next 5-10 years on the field.