A visit to the floor of the market and ask any trader which makes more money % wise it isn't even a contest.
One other comment - In the short term, yes, a trader can make greater gains. But in the long term, statistics come into play. Read some Nicholas Taleb, the man is a math genius and will tell you that given a long enough timeline every trader goes bankrupt. It is almost mathematically impossible to make money trading over the long term (think 20-30 years) because you can't be right all the time. Lots of investment bankers went broke and worse thinking they could never lose.
That's why I say there is room for trading and investing in my portfolio, as one augments the other and sets me even further ahead in my investing goals.
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