Neither agree nor disagree with your analysis.

However, it cannot be lost on anyone that Iran can devastate Israel with a single device, whilst it would take multiple strikes by Israel to produce a proportionate level of devastation. In this case size(geographic) does matter.

I do wonder what the international response would be for an exchange of 1 Iranian bomb to say 4-5 Israeli bombs. I keep thinking "proportionate response". Then again what is a proportionate response for an atomic attack?