If anyone is interested I made a similar utility to Branch compare that will be available while the official one is being finished: Branch compare for Manjaro
It’s very basic as it is meant to be only a temporary solution, but at least it has the basic functionality.
Just to be clear, this is my own site and it is not affiliated with Manjaro (Just in case 
). Any problem or error on the site it’s my fault.
The site is meant to be a Manjaro “fan site” someday, when I have time to do it 