I'd suggest most Muslim fanatics would believe a natural disaster to be the work of Allah, and so help would be the last thing on their minds.
I don't know Pakistan's contribution to the Tsumani relief effort, so will go with what you say. Invariably though it is the West that they call upon (it is certainly the West they blame if no help comes).
I take your point about other 'Western' countries not being affected by terrorism to the same degree (you say it's because they don't 'meddle' in ME affairs), but as the Embassy bombings in Tanzania and Kenya showed, that's no real protection unfortunately.