Your question is based on false premises because genocide isn't about raw numbers. It's based on a number of other things which don't fit the situation in the middle east.
How can you say "I was never claiming the US has committed genocide" while simultaneously, just one sentence before, saying that these countries should qualify?
I was never claiming the US has committed genocide, I simply asked how many deaths do you need to define one. WWII killed 6 million Jews, were only about an order of magnitude away and our current war has now gone on longer with no end in sight.
EDIT: I'm using _your_ definition dude, I don't think it is genocide, yet, but by your definition it certainly is.