Did you try rending the screen, maya by default will not give you percise looks on a loft in prespective view. The default on curve percision is "4," if you want to make it look more curved in the display follow these instructions:
Go to your loftSurfaceShape (Default: loftedSurfaceShape1)
Click on the NURBS Surface Display
Increase the Curve Percision to the desired ammount.
Take a look in your prespective.

Personaly I just render a low quality frame to check the loft and leave the precision alone, it can slow the computer by increasing ever lofts curve persision in large scenes.

Have fun learning to model!