taking nothin from kakashi, i think thta hiashi is more experienced than kaikashi, and i speculate that he is probably much stronger (even though they say kakashi is the #1 technician in konoha) technique wise. I say thi because even though he probably knows a wide variety of techniques, he is highly specialized in the hyuga style jitsus. And as for kakashi, you know what they say about jacks of all trades...