Title says it all. I had a situation where a moderator answered a question and then marked another answer (that said the same thing, but more directly) for conversion to comment because they felt "its length was not up to community standards". 

While I think it is important to maintain some set of standards for answers, I don't think it is appropriate for a moderator to remove (and therefore penalize) other answers to a question in which the moderator has also provided a "competing" answer. 

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In response to some of the comments...

Linking to the question has dealt with the specifics of the question, not the thing I was trying to get addressed. Also, there is no place that shows what mod has actually done the removal. This is not about WHO did the deleting.