How much substance...?
A TON, brother...!!!
As many know, I speak mostly from a "Hardware" perspective and standpoint... Hardware is my specialty... Its my job to know about hardware as I'm a hardware analyst at a well known and reputed tech firm...!
Anyhow, here's a little comparison of Xiaomi vs. Pakistani Awam's beloved Qmobile:
Xiaomi 3S vs. Qmobile Noir S2 Pro:
Both phones are around The 11,000 Rupees Mark...
Q has a Mediatek MT6580 with a 32-Bit Quad-Core Cortex-A7 processor coupled with a 1GB RAM, 2,500mAh Battery...
Xiaomi has a Snapdragon 430 SoC with a 64-Bit Octa Core Cortex-A53 processor coupled with a 2GB RAM and a huge 4,100mAh Battery with a Fingerprint Scanner which is indeed handy...
The A53s on The Xi are not only TWICE as powerful as the A7s but is also an 8 Core Cluster vs. Q's 4 Cores... And lets not forget the fact that Snapdragon SoCs are generally much more reliable than Mediatek SoCs and are much easier to optimize for the manufacturers...
For comparison, The Samsung Galaxy J5 (2016) has a Snapdragon 410 SoC, which is basically a Quad-Core version of Snapdragon 430 SoC with a weaker GPU (Adreno 306 On SD410 vs. Adreno 505 on SD430)...
The Lenovo K6 also has a Snapdraogn 430 and it costs 21,000 Rupees and lack a Fingerprint scanner...!
There's virtually NO COMPARISON between that Qmobile & Xiaomi... It's like comparing a 4-Cylinder Toyota Yaris/Vitz (naturally aspirated) vs. a BMW M3 with a supercharged V8...! Both are compact cars, but couldn't be more different...!
Take your pick, brother...!
BTW, I'd take the Beemer and Xiaomi...!