To be honest both Ryanair and Wizzair have been going after each other for months now in the
PR stakes in Poland so it's hardly from one side only, it all seemed to step up when Wizzair started recruiting ex Ryanair communications department staff
Shortly after Wizz started flying to London from Lodz which was the first route to really compete with Ryanair and since then there has been quite a few more overlaps from both sides, as they both try and protect their strongest territory.
W6 has better brand recognition in Eastern Europe, but a lot of people in Western Europe have not even heard of them, unless they have emigrated from Eastern Europe and I suspect Ryanair is trying to play on this because FR tends to have a better mix of tourists and people returning home on their flights, whereas W6 flights tend to be almost fully Polish people on Polish flights.
Wizz are now saying they are more transparent with pricing as they include card surcharges in headline price, but it's 2 euro per flight more expensive than Ryanair, luggage in the winter is more expensive (fuel surcharged) and you have to join the Wizz Xclusive Club for 30 euro a year to get the best prices.