A friend told me this, and yes, it seems that depending on what weapon you have out, your running speed seems different.
Now I just want to know if it's my imagination or is it reality.
So there seems to be 3 tiers : Main weapon (SG,AR,SR,SMG), Side weapon (Pistols and Sawedoff) and Grenades/Melee
So taking the main weapon as a base, how much faster are Sideweapons and Grenades when sprinting?