Tons of Horsepower
Both of these phones will likely be powerhouses, suitable for average smartphone users and power users alike.
The iPhone 6s Plus will reportedly shift to a new Qualcomm processor to double LTE speeds. The new processor could also help to deliver improved battery life. iOS 9 is also expected to focus on improving battery life and the iPhone 6s Plus could see a big boost from software as well.
The iPhone 6 Plus features remarkable battery life and we can't see Apple taking a step backwards here. Same goes for the Galaxy Note and Samsung.
Samsung will reportedly use a brand new Exynos 7422 SoC chip with its Galaxy Note 5. The CPU is expected to be an all-in-one which means that it will feature CPU, GPU, RAM, storage, and LTE. It's expected to be backed up by a whopping 4GB of RAM. The iPhone 6s Plus will be lucky if it has 2GB of RAM.
As for the battery, the Galaxy Note 5 is expected to feature a non-removable 4,000 mAh battery. Processing power and battery life are two keys for the iPhone Plus series and Galaxy Note series so we wouldn't be too worried if you're a power user. Keep an eye out for benchmarks.