Running a very simple and frustrating wifi test at my house. My "Day One" iPad running iOS 5 gets on average 12 mbps/sec. My MBA gets around 15 mbps/sec. And finally... iPad (3 gen), iPad Air 2 and iPhone 6+ all running the latest iOS 8 get on average about 4 mbps/sec. FOUR! All the devices are together in one place hitting a 3 month old Airport Time Capsule and I've run the test at least a dozen times over a week. Apple support has been involved for two weeks now with no answer.