Hmm...that starts a fresh new confusion for me

Thanks for correcting/letting me know though. True I got some numbers off the net as well - just as I am getting some numbers from you now(on the net again)..wish ALL the manufacturers posted their weights and they all followed a standard.
I dont have any tire changing tools at home, so I would need to depend on a mechanic. Besides a small stone chip can weaken CF, while it wont affect AL. Another thing - lets say we hit a deadly pot-hole which puts both wheels to the test of their respective strengths - AL will bend, CF will break, MG will break.
Break is more dangerous than bend(all this is in my mind - may or may not be true).
And I am not a BST hater. Im a big fan of CF && BST even - but knowing myself I will stop the bike and inspect the wheels after I hit every pothole with a magnifying glass if I get BST's. THAT is not worth the money for me - buying suspicion and paranoia for 4grand$.