Because Sand has higher hardness factor than the gorilla glass.
http://en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness

whats the changelog for v33? I dont see it on XDA

Wanam V5 and Omega v33 both with Jewish Calender still?

Using a higher voltage charger doesn't mean a faster charge. 110V~240V is the operating voltage range for most modern hand phone charger. It contains a variable transformer which step down voltage according to your main supply (Malaysia is 230V) then gives out an output current. i.e. You plug in your charger in US, your charger will switch to 110V but output current will be same (1A rated current), if in Malaysia then operates at 230V with the same 1A output. It is important to check your charger voltage range before plugging into a foreign country's plug. Otherwise..BBQ Charger.

Our S3 battery is 2100mAH (mili Amps Hour) which is 2.1Ah. This means the battery is able to give out 2.1Amps continuously for 1 hour before dying. Ofcoz, our S3 doesn't consume 2.1A this huge amount of current, so it can last awhile. The stock charger gives about 1A charging current, so to charge up a 2.1Ah battery it requires approximately 2.1 hours (normally a bit more due to some power losses)

hows Omega v33.2? any major problems?