What about creating an ACTUAL Dark Knight?

[Reynhart]

Dark Knight Cecil's Stats are actually superior to Kain's for the level range that they appear together (and only really start exceeding DK Cecil's at the levels where you should have Paladin Cecil).

It's not that uncommon to reach lvl20 before changing to Paladin. At that point, a lvl 20 Kain would trump you in HP. In fact, a level 1 Paladin Cecil has around 50% more HP than a level 20 Dark Cecil. How can someone say that Dark Knight was a "high HP, high def" job in that game ?