A single Boeing 777 Engine delivers twice the horsepower of all of the RMS Titanic's steam engines combined. Though it must be mentioned that the implementation of this horsepower is what is key, as steam engines have a much higher force multiplier than jet engines.
Thus in a game of tug of war, with both at full power, the titanic would win every time.
It's under the same principle of how 1910 steam tractors with 15hp are able to beat near modern internal combustion engine driven tractors with 500hp, in games of tug of war, at county fairs.
To put it simply, steam engines have some of the highest torque ratings of any mechanical power sources ever made.
Though still, I can't help but want to see a flying Titanic...
Further Info: https://www.theatlantic.com/technology/archive/2011/12/a-single-boeing-777-engine-delivers-twice-the-horsepower-of-all-the-titanics/250698/