A - You said that "Obama had a lackluster performance with the market." Putting aside the idiocy of attributing market performance to the president, markets boomed during Obama's presidency.
B - Not sure what the point is supposed to be. Looking at the S&P 500, it's up 36.6% so far since Trump took office. At the same point in
Obama's presidency, it was up 64.9% (and it was up 175.9% at the end of Obama's presidency). Is your theory that the relatively poor performance under Trump (you described the performance while Obama was president as "lackluster," and it's been much worse while Trump has been president) because "markets don't trust him"?