LEGO came out with 60197 City Passenger Train and 60198 City Cargo Train in 2018. Much more recently they released very similar sets 60337 City Express Passenger Train and 60336 City Freight Train. All four sets have the same "Powered Up" logo on the front and look fairly similar.
Are there any differences in the power, wheel, and track technology between these older sets and the new ones? If so, are their obvious pros and cons of these old versus newer train sets?