By Dan Weil While central bank warnings of steep interest rate increases have spooked some investors, JPMorgan is sanguine. Hawkish comments about interest rates by central banks around the world have some investors scared that economies and financial markets are headed for a downturn. But JPMorgan strategists, led by Marko Kolanovic, aren’t so pessimistic. “We maintain that economic data and investor positioning are more important factors for risky asset performance than central bank rhetoric,” they wrote in a commentary. “And the data appear to be increasingly supportive of a soft landing (r…