Historically, Egypt has been well-armed by the Russians, and has been very aggressive towards Israel. The 1967 war was not exactly without warrant. Egypt has nearly 80 million people, Israel has 6, 5 of them Jews. Egypt has American and Russian weapons and a huge army (Along with about 1.3 billion in American military aid each year). If you are implying that Israel is more aggressive and armed than Egypt, think again and try actually looking up the facts. They have F-16s and M1s too. So who has "American Armor" again? And actually, Israel doesn't even use "American Armor", they use the Homegrown Merkava (maybe a few old M60s in storage).
Egyptian Armed Forces - Wikipedia, the free encyclopedia
An Egypt in political and economic turmoil, as many Israeli leaders have said, is even more unpredictable and chaotic in terms of being a threat than a stable one.
Photonic says it rather nicely here: