Of course you are right. But sadly the antenna is not quiet the topic here, although I truly think the way apple managed to have it placed exterior is really amazing.
Getting back to the topic, it would be nice to see the sales data more comparative. The iP4 had it's rollout now in quite a few countries. But except for US- sales and isolated other countries here and there, we can't find a lot of data. But maybe it's just me being overly impatient.