The question is not answerable without a definition of best trader. Possibilities:
1. Most money in shortest time.
George Soros. Made 1 Billion in a day.
2. Biggest % in shortest time.
Dan Zanger. Turned 10,775 to 18,000,000 in 2 years.
3. Longest carrier.
Probably Warren Buffet.
4. Long carrier, never blowing up with low DDs making excellent living.
Name escapes me at the moment but there was this trader who claims to have a very high winning % and almost never losses or have bad drawdowns.
5. One big trade that played off huge.
George Soros.
6. Recognizing an edge and trading the shit out of it. Stopping when edge is no more.
etc.etc. I think all the best traders have some kind of edge and plan regardless of bull or bear.
It is possible we could name a different trader for each category.