Aero Tech, there is no single answer, it depends on the aircraft and airport. For example:
B747-300 Surabaya is field length limited, the B747-400 is 2nd segment climb limited.
B747-300 Madinah is Obstacle Limited, the B747-400 is 2nd segment climb limited.
And if you really want an interesting one, look at a MD11 from a hot/high airport and you will find that it is limited by its ability to dump fuel
Mutt