Hamas vs. Egypt

Rather than deal with Hamas using tunnels to get into and out of Egypt, the Egyptian government has decided to build one hell of a moat.
And I quote:

And unlike the fierce resistance and international public relations campaign Hamas mounted against Israel in August, the terrorist group that governs Gaza appears to not be seeking a head-on fight with Cairo.

The difference is, Israel cares about what the international community of the very caring and sensitive says and thinks about them.  The Egyptian government doesn't.