In Ryanair: 2 bags, one up to 55x40x20 cm, the other one up to 35x20x20 cm.
In Wizzair: one bag up to 42x32x25 cm
For me it looks like Ryanair is more generous. But it depends. In Wizzair you can pay not much extra for priority boarding and be allowed to take an extra small bag. You can also pay for a bigger hand luggage. In Ryanair the only option is to buy checked-in luggage.
Going from Łódź in Poland to Karlsruhe in Germany I can take Ryanair from Warsaw Modlin to Cologne or WizzAir from Warsaw Okęcie to Basel, and WizzAir is always much more expensive. But maybe it depends on the route.
In Wizzair: one bag up to 42x32x25 cm
For me it looks like Ryanair is more generous. But it depends. In Wizzair you can pay not much extra for priority boarding and be allowed to take an extra small bag. You can also pay for a bigger hand luggage. In Ryanair the only option is to buy checked-in luggage.
Going from Łódź in Poland to Karlsruhe in Germany I can take Ryanair from Warsaw Modlin to Cologne or WizzAir from Warsaw Okęcie to Basel, and WizzAir is always much more expensive. But maybe it depends on the route.