Amir E. Aharoni, 26/01/2015 02:57:
By "size" I mean the article count and the active editor count.
If you drop this parenthesis, the whole email is fine. :)
Article count is a totally useless metric for size; comparing useless metrics to uncertain metrics is quite sure to produce garbage. Since 2008, total size on Wikimedia projects is defined by usage: https://meta.wikimedia.org/wiki/Top_Ten_Wikipedias While the active editor count is our official measure of current size of a project.
Nemo