In summary, I would say that not only is Citizendium not as good as Wikipedia but it is probably not as well developed as Wikipedia at a similar stage of its development. They have added 3,000 articles in their first year.
Well, we know Wikipedia is better now than Citizendium is now, I don't think anyone disputes that. Wikipedia may have had more/better articles at the same age (I would have to look up the stats), but Citizendium is probably more reliable, since back then, we had hardly any references so it was pot luck whether the information you got from an article bore any resemblance to the truth (most did, sure, but there was no way to know which ones).