According to your arithmetic Christians have a greater right to Jerusalem than any. About half the worlds population are nomily Christian, (and Moslems number 1.2B not 1.5B), so by your logic Israel would be better off ceding control of the old city to Christian control. After all Christians controlled Jerusalem prior to Moslem invasion and have maintained a presence there ever since.
Wes Craven, director of 'Scream' and 'Nightmare on Elm Street', dies 76 (Haaretz)
from the article: Saudi cleric plans Jerusalem trip to bolster Muslim claims to city