I suppose Easy will be concerned about how Jet2 is going to affect the Northwest LCC market. With the slow down in growth at LPL, which could be related to Baby's presence at MAN, there must be a real concerns with what Jet2 could be capable of.
I think that the fact that Easy have never attempted a Prague route from LPL shows that they are nervous about going head to head with LCCs out of MAN. The only route I can think that they have started with direct competition at MAN is Cologne (with honours even), but HLX seem to be any easy target with their minimal marketing.
It will be interesting to see how Easy fares on the Berlin route once Air Berlin ave established themselves at MAN.