The Price of LG G5 is Rs. 51999, Samsung Galaxy s7 Edge is Rs. 56,899. So you pay a 4000 bucks more to get almost the same features and performance that you get in LG.
The LG G5 has a metal body whereas the Samsung model is made of glass. If durability is one of your concerns, LG stands ahead even in this respect.
The few features that Samsung Galaxy s7 Edge model is going ahead with are the Water and Dust resistance, and an IP certification.
Even in cameras, you get a 16 megapixel one with the LG model and a 12 megapixel in the Samsung. Same with the front camera, where 8 megapixel is in the LG model and 5 megapixels in the Samsung.
The 4096 MB RAM is same in both, but yes a 64 GB internal storage is more in Samsung in compared to a 32 GB one in LG. The battery also gets lower in LG with a 2800 mAh than the 3600 mAh in Samsung.
The Processors however does make the difference distinct. The system chip of LG comes is a Qualcomm Snapdragon 820 MSM8996 and the Samsung has an Exynos 8 Octa 8890 one.
The LG runs on a Quad-core, 2200 MHz, Kryo, 64-bit processor while the Samsung is powered by an Octa-core, 2300 MHz, Exynos M1 and ARM Cortex-A53 , 64-bit one. The Graphics processor in LG is Adreno 530 and in Samsung it is ARM Mali-T880MP14.
As per user rating both are strong competitors but if you ask for an honest opinion, I go for LG G5 this time over the Samsung Galaxy s7 Edge model.