DTube: monetization is temporary (7 days), more limited upload formats, performance issues sometimes, and the biggest drawback (if I understand correctly) is that your video will only persist for 57 months unless you pay or seed it yourself.
Daily Motion: Far fewer features than youtube and not as much of a social network aspect (may or may not be issues for you). It appears from my limited use that you will earn much less than with youtube and even DTube (at least in the short run). It also supports fewer video formats (can't upload mts files directly for instance without transcoding first).