It shouldn't be too surprising to see Wipeout Pulse and Daxter move to PS2. Sony has made it something of a tradition to move its big PSP exclusives back onto Sony's aging home console. While this potential move may anger some, it's important to note that these ports usually come out over a year since the original release -- long past a game's relevance at the store shelves.
These ports are not confirmed (the only source we see is French site Jeuxvideo.fr). But with Wipeout HD coming out on PS3 and Secret Agent Clank coming out on PSP, there's very little reason for fans to get up-in-arms about these potential projects.