Lets take a look at known AQ/islamist attacks.
WTC '93, only killed six, but the bomb was a pissant compared to OKC, would have leveled North tower with a OKC sized bomb.
Kobar Towers, 19 dead, blew up a fuel tanker outside a US barracks
Embasy bombings, 2 US facilities hit simultaneously killing 200.
USS Cole, got a bomb close enough to a US warship to blow a 30x10 hole in the side of destroyer, bigger hole than the Stark explosion which was hit by an anti-ship missle.
9/11, 4 airliners, 3000 dead, you know the details
Bali, 200 tourists dead in a nightclub
Madrid, transportation hit, but more casualties
London today 2 dead, 90 causalties???
Something isn't adding up.