I can unfortunately confirm that the Adonit Jot works WORSE on the Surface 2 than the RT. I don't think that it is due to the Surface 2 being less sensitive than the RT, but that the 2 has been "tuned" to work better with rubber and foam tipped styli. On the RT, rubber and foam were terrible... most notable when slowly drawing a triangle. Using the Jot, performance overall was significantly better.The Surface 2's screen is less sensitive then the original RT and as much as enjoyed the Adonit Jot Pro on the original RT it has never matched the performance on the S2. My Wacom Bamboo Capacitive Stylus works better in the S2. I received the LinkTec Apex Glide last night which uses a battery to give a Capacitive Charge on a fine tipped stylus, still testing but early test are promising. Decent inking in OneNote, iffy in DrawboardPDF, excellent in FreshPaint.
It is amazing on my Lumia 1520 BTW... wish the S2 had the same type of screen.
Now on the Surface 2, the Jot is producing terrible results, and the foam and rubber styli are nearly as good as what I was getting with the Jot on the RT.
This is all made more painful when I use Outline+ on my iPad (OneNote-clone) to draw in a OneNote page and then bring that page up on the Surface 2 to make additions... the difference in the flow and fine strokes between the two is quite evident.