What we don't allow is extremely repetitive stats, which is stated clearly in the rules, verbatim.
This means if you have an item that uses 4+ (depending on the item) stats with the same value, it will be deleted. It doesn't matter if the stat is "999", "10000", or even just "1". If it's the same over and over, it's going to be removed.
Why? Because those items take a split second to make, aren't remotely creative, and nobody but the person that made it will want it. Sharing an item means the item has a decent chance of being used by others. The rules are in place to keep items that only the author would ever want OUT of the shared database.
But this doesn't stop you from creating them (only sharing them)! You just need to use the big, green "DOWNLOAD" button instead of the yellow "SHARE" button.
If you want a backup of your item on WoW-V, you can hit rank 3 or donate to get Donor or Sponsor status, all of which come with personal item slots (aka the red "SAVE" button). Personal/saved items are not subject to the rules, meaning you can make whatever you want without getting the item removed and/or getting yourself banned.