Never argue with a paper trader. Just admit they are right and admire there setups and trades. Advise them to do the same with real money. Somebody needs to feed the system...
Try it (with your own, real money) -- and that will answer your question, about trading, Paper/Sim traders are Annoying dweebs; It's like talking with a Video Game player...vs a real army soldier, or cop, or race car driver,
Sim trading is like playing shooting game on your computer compared to real combat and live ammo zipping by your head.
Heh, how's this for a poser. IIRC, Ninjatrader has a "linking" option of some sort, where your trades on sim can be mirrored to the live account in the background. That seems like it would be even messier in the head. You know you are trading in sim so it's cool. But in the back of your mind you know it is also reflecting in live. What a mind-job!