box did you read the specs for the Nexus and Galaxy?
Nexus $400USD
Display: 10.055” 2560 x 1600
Storage: 16 GB or 32 GB
Memory: 2 GB
CPU: Dual-core A15
GPU: Quad-core Mali T604
Battery: 9000mAh
Weight: 603g
Galaxy $350USD
Display: 10.1" 1280x800
Storage: 16 GB or 32 GB or 64 GB
Memory: 1 GB
CPU: Dual-core NVIDIA Tegra 2
GPU: On chip
Battery: 7000mAh
Weight: 565g
So, here is the winner for each category;
Display: Nexus
Storage: - Not sure on pricing for each model, probably approximately comparable -
Memory: Nexus
CPU: Nexus
GPU: Nexus
Battery: Nexus
Weight: Galaxy
So unless either $50 or 38g will break your bank/back, get the Nexus. There is no real competition.
Honestly I wouldn't turn down that battery and display on the Nexus, even if it cost a few hundred more.