> 2) If we use a capacitive stylus on a regular tablet, even if it has a small head, is it correct to assume it will never be as precise as the S-Pen on the Galaxy Note series (including the tab)?<
I can help w/ Q2: A capacitive system has low resolution - which means it only picks up a circular area of say the size of the ball of your finger tip - no after market pen will allow it to be more precise in size just in placement ( center of circle). They are working on different "plus" pen solutions ( some to get the pressure sensitive going) but again none will give you precise hit and high pressure sensitivity - not able to make more precise the circular area under the pen. The Galaxy note has that too for fast, casual and gesture based touch, but it also has this secondary WAcom created input explained in my original post in this thread, where there is a FULL DIGITZER under the surface of the display - thats what give this spen its real edge (not just the pen but the surface). So yes you are correct to say an after market capacitive based pen will NEVER give you the precise control as the spen and Wacom made digitizer tech.
I like to say that the Note has 3 input modes, touch for casual, gestural and fast, spen for precise, creative and note taking, and then also dead accurate voice recognition for voice based commands and dictation. It is this last one that is under discussed ( in the hyped up SIRI world) - it is amazingly good - best on any phone. I use it constantly especially in my car with a card doc. I never type my emails and texts on my Note - I always speak them. Using Google Now/Google voice input and vlingo.
Here how I explain it on more Apple based sites like cNet:
If you are a power User - here is what I said about by Note 1 - same holds and more for the Note 2. An game changing phone.
There is something perfect about this phone for power users. Spend a few hours or a day with it and you will be hooked. If Apple came out with it, the world would be going crazy - so for now it is simply the users (without much press) who buy it and love it - hence > 20 million fans of it.
It does fit in your pocket, you can do allot with one hand ( but it is a new paradigm so you want to be able to use two and the pen too at times). It is mainly a phone for power users (those who use all the of computer/web/app functionality). For them the display ( would fit under the definition as a Retina Display - but of course the only Retina Display with a simple Wacom tablet under is surface), the real estate, the pen and dead on voice recognition (better than Siri) - takes the frustration out of serious mobile device use - no more missing a link, having to constantly zoom up/down, unable to use a web app because it is too small to see - all this just works.
The wacom pen/digitizer is pixel accurate and pressure sensitive, again basically having a simple wacom tablet under the 5.3" display, so anything I do over a minute (touch is there and great for fast and casual,) I pull out the pen and kick butt - can hit at button/link with full accuracy (even a tiny tiny one), take notes, annotate anything ( maps, web pages, screen shots, pdfs, ...) make charts and drawings and paintings ( artists love it! -- wacom and photoshop on your phone) but I switch to dead accurate voice (due to the one of the fastest processor out and google / vlingo voice tools) - which means in one voice command I can open up any app, play any song, call , ... and dictation - I always use voice dictation on emails and messaging now (often while walking! on campus)- I did this whole cnet comment with my voice.
So argue about numbers and apple versus samsung all you want - buy any phone you want. By I am a 20 yr veteran of UI research ( Apple offered me leadership jobs twice, ran a mac based division of EA, and I have created UI systems for web companies - now as grad chair I run a major research university with 60 PhDs in interface design) and I am telling you this phone is a game changer - just try it with an open mind. It is not for everyone but if you are a power user especially who wants to get the web ( web apps, gmail, gcal, todo web apps) back on your mobile device with zero frustration - this is the phone. I personally have the international version with the faster processor, unlocked, ICS JB and device choices now and a dev community that rivals any out there ( I have better than stock Android JB). So I can find/get access to any pro tool I want. I run my servers from my phone now, read 100 page thesis pdfs where I fully annotate them now, using special gesture commands to automate things and in the middle of doing so , I say 'hey galaxy" play "shock the monkey"' and change the music while using my pixel accurate pen - it is heaven. Sorry for the long post but remember I am purposely walking on campus now ( it is raining here in Vancouver), voice inputting this all with only minor corrections made on the fly with my wacom pen - do that with your phone. OR try this one. ( Or save money and buy a used international Note 1)