from the comments:
Just one technical detail to share: "because a 777 is a large aircraft with a large cockpit to wheel height, it would be typical to fly the approach a tad steeper than the standard glideslope." I think what you meant to say is that it APPEARS to be high on glideslope when you're looking out of the cockpit windshield of a jumbo jet; the actual glidepath is (or should be, anyway) the same for any aircraft using that runway's glideslope or papi.