Only as much as a 10% longer hose need a bigger pump. Yes there is friction in the system and it is part of the equation but I don't think it is much of a factor here.It's simple bigger radiator needs a bigger pump to maintain pressure and overcome losses. If the Kraken has a bigger radiator and more powerfull pump with decent fans it will be better.
I doubt there will be much between them my half knackered H100i can keep my i5 clocked to 4.8ghz under 70.c so it has an easy lead to follow.