Good point, though I suspect it is down to the ring pull being the weakest part by design of being able to open it along the indented outline of the tab. Thou

Good point, though I suspect it is down to the ring pull being the weakest part by design of being able to open it along the indented outline of the tab. Though it could also be so possibly from the aspect of the carbon dioxide want to rise to the top and that extra force would only incure more pressure towards the top (assuming the can is upright). There again thats a bit of a wild guess, but the only plausable explanation I can find as to why that would be so. Or it could be wrong in some way and mixed the ring pull tab area as the weakest link and worded it to impley the whole top. Though I do know with most certainty that if placed in a freezer and left then it will expand at the top and the bottom and mostly rupture a bit around the ring pull tab in the process.