not trying to start something but it would be hypocritical not to mention:
New Super Mario
Gameboy Advance SP
Now I'm not usually one to jump to Sony's defense these days, but how is the PS3 having a PSP style menu a bad thing? They're trying to create cross-Sony-platform brand style recognition. Quite frankly I'd find it a bit off-putting if they weren't the same. It's just natural to have a product and its sister product have the same style.
Can't find any threads about this particular issue on GBAtemp or the wider intarwebz. Saw one video on YouTube that seemed relevant, but it was some dude with the same issue, no solutions offered in the comments. :/