Having had a close look at them, they are slightly different from the Battlefront versions. The bases are slimmer, the model slightly taller and ever so slightly longer. Detail is fantastic and while unlike the Battlefront version they don't have a spare A/T gun wheel on the front, that's fine for me as they were bought for my 4.2" Mortar platoon.
Internal detail is a bit patchy, as there is obviously stuff that is supposed to be covered by putting the crew in.
You can see the internal detail better here, as well as the slightly different lengths. Note the front of the far away FiB model is lined up to the front of the (painted) FoW model. Whereas the front FiB model is lined up front of the base to the front of the FoW base (if that makes sense).
Never mind the drivers, they are 'armless...
And an idea of the height difference:
And a slightly blurry pic from the other side:
And a slightly blurry pic from the front:
When I get round to painting these, I am going to use a new spray I have had for a while but not used yet.
This is supposed to be a 'British Armour' colour, so I will be interested to see how it measures up to the Russian Uniform I have been using from Vallejo.