Pardon me if i'm wrong....
12mm more sturdy than 10mm. YES.
12mm is stronger than 10mm. Pressure, YES. Impact, NO. (Any glass weakess point are the corners, give a knock, it'll break into pieces regardless of the thickness)
Anyway, whenever you have any tempered glass install at home, you can't know for sure they'll last. Cos they might have knock onto a sharp object before that will weaken them but can't be seen by naked eyes. One more impact on the spot will cause it to shattered.
So if you're looking for tall glass, go for 12mm for it's sturdy not the strength (if for vertical application).