So how do you explain it
Take 5 minutes and glance at the stats from some of Israels wars.
http://en.wikipedia.org/wiki/Israeli_War_of_Independence
http://en.wikipedia.org/wiki/1967_war
http://en.wikipedia.org/wiki/Yom_Kippur_War
Typical Israeli War Scenario:
Israel: 50,000 troops (264,000 including mobilized reservists); 197 combat aircraft
Arabs: 280,000 troops (Egypt 150,000; Syria 75,000; Jordan 55,000); 812combat aircraft
Israeli Casualties: 779 killed, 2,563 wounded, 15 prisoners (official casualties)
Arabs: 21,000 killed, 45,000 wounded, 6,000 prisoners over 400 aircraft destroyed (estimates)