Relating screen looseness, we must not forget we are dealing with 2 different kind of hinges.
On the older MBP, when we pressed the opening button, the screen just jumped to a semi opened position (due to the springs on the hinges).
On the new on, this initial movement is made solely by the user.
So, in my opinion the new MBP should be compared with for example the MB Air, that has a similar technique...
Does it makes any sense?
Regards