but they are not moving faster than light- if time is variable and millions of years pass within seconds of the big bang, then WITHIN THAT TIME FRAME lightspeed is still the speed limit
unless the speed of light is also variable depnding on the universe size
The theory comes together in this. Speed is a function of time. And time can be variable depending on speed. It could therefore be postulated that the speed of light over the course of time has changed. By today's "speed of light" standards, scientists must assume that the big bang moved mass (from nothingingness) significantly faster than the speed of light. This would throw off the age of the universe by a good measure.
Look at it another way. If the expansion (speed) of the universe (matter in it) is slowing down, can we assume time then is also slowing? By human's definition of time, we can see objects that are producing light that are 13 billion years old. But if light once moved faster than it does by our standards today, and time has changed, who is to say how old, or how big our universe actually is (Since time and space are linked as a constant in human physics).
(I think I pulled a neuron.)