Some folks lie with statistics; some others lie with maps. You can place website OnIslam in the latter category. Here is its map showing the "Palestinian loss of land" to the Jews:
Wow. What a "vast" swathe of land, made even larger by the inclusion of Gaza and the West Bank, areas which are completely (Gaza) and almost entirely (the W.B.) under Palestinian control. Here's another map. It shows Israel's real size vis-a-vis its Zion-loathing neighbours:
And here's a map showing the area the Jews were supposed to get, most of which ended up going to Hashemite Arabs in payment for their role in WWI:
See how informative maps can be?