Was a poll needed?
#1 works all of the time against a single opponent including touch attacks.
#2 works all of the time against multiple opponents with the exception of opponents doing touch attacks.
#1 is better defense for and against spell casters.
#2 is better defense for and against weapon users.
So, I suspect that since most combats have more weapon users and fewer spell casters in many campaigns, by default the poll is skewed to answer with #2 (even over #3). But, power is not the same as utility and the results of the poll do not really indicate a power comparison as claimed. It indicates a utility comparison.
#1 works all of the time against a single opponent including touch attacks.
#2 works all of the time against multiple opponents with the exception of opponents doing touch attacks.
#1 is better defense for and against spell casters.
#2 is better defense for and against weapon users.
So, I suspect that since most combats have more weapon users and fewer spell casters in many campaigns, by default the poll is skewed to answer with #2 (even over #3). But, power is not the same as utility and the results of the poll do not really indicate a power comparison as claimed. It indicates a utility comparison.