Expert traders would like to short term trading, they are mostly comfortable to day trading i know some people, long term trading boring for them, they want to make profits in daily, but even expert traders can not make profits in consistently it's impossible, because they don't know what happen in the next after bought a token.
I think it doesn't depend on the level of the traders. Even if they are experts, they may be interested in long term as well. I think traders choose whether for short or long term trading, depending on the market condition, too. So, the experts are possible to do both short and long term together. How the chance for the success? Since they are called as experts, surely the chance will be high (both for short and long term).