Forum:Hero stats vs Personal stats

How do a general’s stat points work in conjunction with your own personal stats and how much does a generals stats matter over personal stats in Duels?

What I am trying to determine is whether I really need to spend countless money on Favour Points in order to try and get the best generals with higher attack and defence attributes, but can only be obtained through chests (and only have an ‘Epic’ chance of obtaining), or if my current general (Katan – level 4; 22/22) is sufficient providing I pump up my personal stats enough?