Gamerscore is incorrect

On Minecraft, it says my friends Gamerscore is 0/2930 in their profile.

On their profile at xbox.com, it says their Gamerscore is 125.

Steps to reproduce:

1. Go to the Friends Tab
2. Search [Friend's Gamertag]
3. Go to xbox.com and click on your avatar in the top-right corner
4. Click 'Xbox Profile'
5. Click on your friends profile

Expected Result:

They are exactly the same

The Gamerscore is only from completing Minecraft Achievments!