Thanks.
So the total is 1.25 A peak and the 3 TB Red is roughly the same from what we can see, but I've measured a 3 TB Red at 2.5 A peak so the difference is exactly a factor of two, I don't believe in coincidences...
One of us is definitely wrong by a factor of two, I start to believe it's me but I can't see where the mistake is. Well, I'll eat and I'll re-check my entire setup after that ;)
Edit: I double checked and everything is right with my setup. I'm puzzled.