Linux overheats on Macbook Pro 12,1 (Early 2015), but not on Asus laptop

I recently bought a Macbook Pro 13" Early 2015. I was successful in installing Linux Mint 18.1 Sarah and everything worked fine but the Macbook Pro started overheating. Idle CPU temperature was around 67-70 degrees Celsius. I tried running a simple python script which printed numbers from 0 to 1 million and saw the temperatures hovering at around 90 degrees Celsius which in my opinion is very hot for a simple program. I thought it has something to do with Linux Mint and tried installing Ubuntu 16.04 which is the base for Linux Mint and still had the same heat issues. I tried Fedora and RHEL, same heat issues. I have an Asus ROG gaming laptop which is running Windows and Linux Mint on dual boot and Linux Mint runs around 70 degrees even under heavy load. I installed macfanctld and it does nothing except run fast for like 10 seconds after boot and then nothing. My question is, why does Linux run so hot on Apple hardware which has an Intel i5 processor with lower TDP than the Intel i7 on the Asus which has higher TDP rating? I really would love to use Linux on the Macbook Pro without the heat issues. **[Edit]** This is my output of lspci -k | grep -EA2 'VGA|3D': `00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09) Subsystem: Apple Inc. Broadwell-U Integrated Graphics Kernel driver in use: i915 `