For serious graphics 2D apps, have 3D Nvidia cards got what it takes ?

We read about the Matrox Parhelia being wonderful at 2D, and 'so so' at 3D,
though
a Review at
http://www20.tomshardware.com/graphi...charts-04.html makes it
look useless amongst the rest. We never get a review comparing the 2D colour
accuracies and functionality of the 3D gamers cards and the serious 2D cards
like Matrox. Now I do graphics and want decent 2D graphics, but also I don't
see why I should be denied decent 3D, especially if I am doing some of the
graphics for the 3D arena ! I am about to go for something other than
matrox for my fourth card in 10 yrs or so.
I need better 3D for simming and 2D work some of which is for 3D sims.
Perhaps the days of the 3D card with pass
through facility should return, Matrox Millenium and a Voodoo 2 I recall,
best of both worlds and seemed sensible. Keep hearing that 3D cards are
developed with little thought to 2D but would a serious graphics person spot
the difference, what might those differences be ? Do they both display a
cmyk or rgb mix or pantone spot colour exactly the same on the same pc and
monitor setup, this is the crux of it all. Lets have a lab test measuring
the screen colour with each card plumbed in !
Lets have some comments reviewers please on how they compare for 2D as well,
or are they all top notch ?
What visibly does the Matrox Parhelia give on a single monitor setup that
makes it better at 2D than say a GeForce5959ultra ?
WILL I BE OK FOR 2D WITH MY GeForceFX5950ultra ?
Steve