daily swing trade tends to have larger risks, but higher return. the reward to risk ratio is howeve lower. so the position should be smaller.
intraday DT has tighter stops and better consistency. you can put on much bigger position.
mkt is fractal. if you cannot trade intraday patterns, you give up some edge to extract money from mkt, but you can still make money from swing trade. your costs/commission structure are also crucial. i have never met a trader that can make money day trading at TD/Scottrade type of commissions.
having said all that, do not expect 50%+ return on capital with very high consistency (say 3+ sharpe) from swing trade only. be happy with low double digits return and 1-2 sharpe.
just my 2c.