Arriving a tad later than the other two, the iPhone X has been certified by TENAA, which lists its battery and RAM capacities – numbers that Apple rarely talks about. There are some good news and some bad news, neither particularly unexpected.
First the good: the X has a slightly bigger battery than the 8 Plus. It’s not a huge difference, but keep in mind that the X is more compact than the Plus model. We’re about to see if the AMOLED screen is more power efficient than the LCD.
|iPhone 7||1,960 mAh||2 GB|
|iPhone 8||1,821 mAh||2 GB|
|iPhone 7 Plus||2,900 mAh||3 GB|
|iPhone 8 Plus||2,675 mAh||3 GB|
|iPhone X||2,716 mAh||3 GB|
The bad: you get 3GB of RAM and you better like it. Yes, the iPad Pros have 4GB of RAM and yes, they are cheaper than the iPhone X. That’s Apple for you.
Source (in Chinese)
So you obviously didn't do much research
Then you didn't read it
Only read a few comments but find it funny to see droid fans hating on a post about an apple product, everyone has their own tastes no one will ever like or want everything you do so lets stick to our own and stop being a hater.