Hack is clearly better than Taz for severel resons.

1. You take less loses with Hack against neutrals. The way we fight neutrals is that we get first strike to avoid loses. After Hacks first strike there is no or little retaliation. Battles where the neutrals get first strike we avoid or we bring powerstacks and fodder. The ai rarely hits the powerstacks because its affraid of the retaliation. Also a balista is much more usefull on Hack than on Taz.

2. Hacks chance of getting armor is higher than Taz chance of getting offence. 6 vs 5 isnt that big a diffrence in theory, but in practise Taz is left with no offence way to often.

3. Hack gets better magic skills than Taz. You allmost allways get earth and air with Hack, the same cant be said about Taz.

4. In a main battle where you have one of these 2 chances are that you will have the upper hand in might. So in case you are up aginst heavy magic Hack has a better chance of deeling with it by his high attack and mass haste.