Here's a comparison at Piseco Airport (K09) in the Adirondack Mountains of NY on May 1st . There's a slight difference in the mix between conifers and deciduous trees, so the UTX vegetation LC is definitely different. This is with ORBX HD Trees.

 

Default P3d vegetation land class:

UTX USA 2.1 vegetation land class:

In case anyone is wondering what the actual vegetation cover is. Here is 2009 false color IR orthoimagery of the Piseco Airport in winter. The red colored areas are evergreen trees. The remaining open areas are mostly deciduous trees with a small amount of wetlands and brush land. The summertime version can be found on Google Maps:

 

https://www.google.com/maps/place/Piseco+Airport/@43.4531981,-74.5175517,1290m/data=!3m1!1e3!4m2!3m1!1s0x89df199d7bedd027:0xa5dc711db2c37f2?hl=en