Upgraded Perfect HoZ (Eth) 868.5 Def
Upgraded Perfect HoZ 507 Def

The different might not be much, but after lv 30 Holy Shield:
Upgraded Perfect HoZ (Eth) ~4860 Def
Upgraded Perfect HoZ 2839 Def

If you decided to put 1 in Defiance (with lv 30 Holy Shield):
Upgraded Perfect HoZ (Eth) ~4991 Def
Upgraded Perfect HoZ 2915 Def

There is quite a difference, but it is really up to the dueler to decide whether or not they'd need more defense.