Hello guys, I am actually agasint this comparison but still I need to ask your opinion.

First, I am a grad architecture student in NYC, and we mostly use
Autodesk Maya, Autocad, Rhino, Photoshop, Illustrator, Archicad(only me) and 3dsmax Vray. So as you can see I work on 3d too much! also lots of analisys in Maya. so I need really good computer. but I cannot buy a desktop. So My school suggests
Dell Precision™M4700 15-inch. But I think its not that good for its price. So i didged more and I come up wit these

Allienware M14x r2
i7-3740QM processor (6MB Cache, up to 3.7GHz w/Turbo Boost 2.0)
256GB SSD SATA 6Gb/s
16GB (2 X 8GB) Dual Channel DDR3 at 1600MHz
2 GB GDDR5 NVIDIA® GeForce® GT 650M with Optimus™
Creative Sound Blaster Recon3Di with THX TruStudio Pro
2.92 kg

this will be total 1707 dollars (including tax)

Also I have this mac in my mind
15-inch MacBook Pro with Retina
2.7GHz Quad-core Intel Core i7, Turbo Boost up to 3.7GHz (same)
16GB 1600MHz DDR3L SDRAM (same)
NVIDIA GeForce GT 650M with 1GB GDDR5 memory (same but 2GB)
256GB Flash Storage (same)
2.02 kg

which will be 2503 dollars.(including tax)

as we see most of their hardware is same. And this week new macs will be announced (will it?) , it this ones price goes lower it is the obvious choose. but?
I have been told that new allienware is not worth it(will be announced this week also)

Pros of M14x r2

Will it run MacOS, smoothly? or even will it run it?

Pros of Macbook Pro Retina
Retina display quality
better built quality
bigger screen

Will it worth extra 800dollars
will it run windows as smooth as allienware for 3d softwares
will I need to buy extra stuff?
Note1: when I buy mac, I have to install windows too! this is important
Note2: I dont care about gaming, in the youtube tests, they got very similar FPS in recent games. so it is not the thing.

NOTE3: Problem solved, Ive bought Razer Blade 14"
Because it is
- fast enough
- light enough (1.8kg)
- thin enough (0.66inch)
- design
- price is way more better than mac