Tell me an similar device with same/similar hardware for an way better priece please.
You have some really bad information my friend ;) The iPhone 6s is the fastest phone on the market. The iPad Pro is as strong as full i7 x86 tablets. Other ARM-Devices arnt even in its league.
Iphone 6s+ is about 400$ more expensive than a Note 5 lol. I said "similar price point". Meanwhile, a Galaxy S6 (which is still substantially cheaper than and Iphone 6s plus mind you) has about twice the gflops for its GPU, two times the CPU power, 3 times the RAM, 1440p vs Iphone 6s plus' 1080p, and I could go on.
Your graph is for single core performance.... And it doesn't even feature the CPU that an S6 has. Heck, it doesn't even feature the CPU that an Iphone 6S plus has lol. But single core performance isn't everything you know. The iphone 6s plus only has 2 cores, while the galaxy S6 has 8 cores that also have higher clock rates.
Now that we have the phones out of the way, let's go to PCs.
That thing has similar hardware to top of the line imacs... Keep in mind it is about half the price, but imacs come with screens. Throw in a 4k screen and it's only 1000$ cheaper than an imac.