No, pottery should not be your first choice to defend yourself against an attacker, nor your second for that matter.
Especially when being attacked by a crazed home invader with a golf club, pottery is a very poor means of self-defense.
Detroit Free Press: Cops: Homeowner tosses pottery, flees burglary suspect
However, it appears that was all this particular home owner had available.
Luckily the pottery throwing delayed the attacked long enough for the homeowner to get upstairs and then jump out a window from the second floor to safety.
Methinks the homeowner should consider upgrading his self-defense options from pottery to something from the Iron age or later, such as perhaps the Tenifer age.