In my expierence 4 pc rods are a bit stiffer than 2 pc rods, because of all the ferrules. This might be a small hinderance on a smaller rod, 5 wt and down when fishing with very fine tippets. Except for my 9 1/2' mid flex 7 I got specifically for steelhead, all my rods 6 wt and up are four pc, but they are all tip flex rods purchased for big water, and the tight loop throwing stifness is what I wanted.
Knockoff has a Cabellas Stowaway 3 WT 7 piece that has power and the ability to throw a tight loop that has to be seen to be appreciated. That is one powerful little stick, and he has no problem with it on windswept L. St. Clair chasing panfish. The fact that he is a pretty darn good caster in his own right doesn't hurt either, but the stiffness added by all those ferrules has got to help. He has also handled some fish on it that are well out of the realm of what one thinks of catching when rigging up a three wt.