I think its interesting that two of the most bankable stars of their respective times are/were enormous guys: Arnold Schwarzenegger and the Dwayne the Rock Johnson.
Robert Downey Jr. $2.4B 5'9"
Tom Cruise $8B 5'1"
Tom Hanks $9B 6'
Dustin Hoffman $2.5B 5'6"
What his publicist says should be taken with a grain of salt.