My question is: how efficient are these AIs really? Do they significantly improve a trader's overall profit and loss ratio, or is the improvement only marginal?
These AIs are just guides. If they are making enough money through the trader's way of trading, it's because they're there only to help but not they are the one that's entirely making the trades. Because if AIs are there to trade, then we won't be doing any trades anymore and let them work for our money and so we won't be bothered anymore of how to decide to make our trades win. But no, AIs/bots have been there already even the trend of AI came. It's not the actual AI doing the trade for us because many misconception are still thinking like that.