No it's not the same as LEGO, but so very close.
This might be more than you need to know but...
People often confuse the use of the word scale.
In (model) railroading, the distance between the rails is the Gauge.
In the picture above is O gauge track, which has 32mm between the rails.
That's pretty much equal to the length of a four stud brick.
This means when Lego wheel sets are put on O gauge track, one wheel sitting on the rail,
the other wheel will be sitting just outside the other track. If you look closely, you can see the overhang
(But wait you say, Lego wheelsets are four studs between wheels! True, but you need to add a little for the thickness of the wheels)
Anyway. All the scenery is in O Scale, which is the proportion that something is in the model compared to real life
In the UK O Scale is 1:43.5. That works out to be that 7millimetres of model is equal to 1 foot of real life thing.
Carl builds his trains in about this scale, so they look the right size compared to the things around them in the picture.
Have a look at
as an idea of the similarity of scale.
For an idea about scale, take a look at
, showing what size minifigs would be in real life if they were considered to be various scale models. O scale varies between UK, Europe and the US. In the US it's 1:48, pretty much spot on for minifigs to be about 5'6"