Like the title says. Even 3 Kg fish put up a huge fight, on a 35 Kg setup.
I can catch fish 3 times larger, and even some of the same Dorade's etc.. on the Madeira map way faster with this exact same rod setup.

The sea fish in the Po map are way to powerful. Also interesting is that on that same map I had issues that were reported in another thread, with the line being reeled in all the way and the fish is still way out.

I think it's all related to how those fish are tuned, as in way over-tuned.