Every tool has a job it does best, many jobs it "can" do, and some it simply
is the wrong tool to use. Table saws excel in ripping, where a good fence
and work support are important. To do miter cuts or cross cuts on larger
length pieces and in particular compound miter cuts, they begin to have
problems. OTOH, a RAS fence and table layout are perfect for crosscutting
long pieces that don't exceed the capacity of the saw in depth. With effort
and excessive time setting up, they can be used even as an overhead router
or planer, to some small degree. Ripping with a RAS simply is something I
don't care to even try. Miter cuts involve having to crank up the arm
before swiveling the arm and then trying to lower it enough to cut the
stock, but not really gouge into the table too much.
That's where the dedicated miter saw comes in best. It can be tilted and
swiveled with the press of a lever, usually and makes rock solid cuts with
In my old shop, I had a RAS built into a bench, so that the blade was in the
"middle" between the walls. I could crosscut to the center of 20' material.
To the right of the RAS, about a foot beyond the swing of the arm, I had a
recessed area on the workbench that held the miter saw, so that the table of
the miter saw was flush with the workbench top, which was also flush with
the RAS table. It was a snap to slide the miter saw forward in its trough
to align the saw's fence with the fence of the RAS, using stops on the
trough to instantly align the frame. Since it was off center, I didn't have
quite the length capacity, but it was never a problem. It was very easy to
crosscut a piece to a length with the RAS, then move over to miter the other
end on the miter saw.
No saw was "best" or "worse," saw in the shop. Each did its own job well,
with an eye to convenience and accuracy as the goal.