Actually, he's wrong. He's comparing the number of good wines, not the best wines in the $10-20 range. There are better wines available in that range from Jumilla than from Rioja. There are many more wines produced in Rioja, but that is not the subject of the current discussion, even though he's trying to change the subject.
We weren't comparing Rioja and Jumilla, just the best wines in the low priced range. The number of bottlings has no significance.