For me it looks like Ryanair is more generous
With cabin baggage yes, but I was thinking more of hold luggage. Both airlines charge for hold baggage but with Ryanair you only get a 15kg hold baggage allowance ( you can take 20 kg but you have to pay extra ), with Wizz you get 23 kg with the option of paying extra for up to 32 kg.
maybe it depends on the route.
Possibly. Last time I checked to fly to Warsaw, prices were very similar to Ryanair, but the flight gets in at 1.35 am with Wizz, although it flies to Chopin instead of Modlin.
Prices will probably also depend on how far in advance you book, if it's a popular route it will be more expensive if you leave booking it till late.