This makes sense. The prices of the console versions and even the Vita version have already dropped. Launching it at a price of 40 bucks won't exactly attract new customers. Launching it 10 dollars cheaper will.
Not a game I'll be getting unless it's on sale for £5 or something. Might work great on the 3DS, but when I have the option of buying games for the PC/PS3/Wii, I usually end up getting it for one of those and then use the handhelds for other games (exclusives I guess?).
Well that's the thing. All consoles are released already, but the 3DS version comes out months later than the rest. It's not an advantage in this case regardless of opinion of the game or any of the consoles.
At the same time the PSVita version has been out already for a while and is the first portable version. Sure quite a few people will buy it, that I'm sure of, since many already have a 3DS and not yet a PSVita.