Cards are a faux, fixed, semi-predictable environment...with not that many variables to consider. The market is way much more complex, and deeper. and open to higher degrees of ambiguity. To succeed greatly in the longer run trading, rather than playing poker, it requires another world of complexity and depth and maturity and wisdom. Can you dig it,
This is absolutely correct. The post you responded to is a great example of someone not knowing what they don't know. No offense to the other poster intended, but I found the exchange funny.
I got into my first trading job solely based on the fact that I played poker. I still had to do all the interview rounds, but the bank's recruiter would never have invited me otherwise (liberal arts degree). Edit: I don't think my poker experience gave me an edge in trading though.
In my opinion, the speed of poker gives it some consistency. It becomes a routine and you can develop a rhythm. Trading is a different beast because each trade varies in the amount of time held (which is probably why people like to automate and eliminate the emotion variable).
"properly" has not been defined and could also have a great deal of variance. If one were trading in 2000 or 2008, one could have made a fortune (but still with a great deal of variance). A poker player up against a table of novices might experience little variance. The cards are only a small part of the equation.