LeoJ posted "BBS" trailer above, this is "358/2 days" trailer :

I'd accept you not being impressed by the DS, but you're a liar for calling it the worst ever, unless you have tried EVERY HANDHELD system, or correct your statement to "the worst handheld system I've played." Plus by WHAT STANDARDS do you call it the worst? 

I think 368/2 days will sell better. Just look at the DSs Install Base.

But reviewed higher may be BBS because looks like it sticks closer to the formula than 368/2 days will.

Whichever one is on the DS will sell more. Just the nature of the beast. I don't know which one though.

Can't decide on quality though cause I known nothing about the 2 portable KH games.

Actually you're wrong. The battle system in BBS is similar to CoM, while in 358/2 Days it's the exact same as KH and KHII.

Stop trying to be funny, none of that was 358/2 days, those were cut scenes of FInal mix + and gameplay form KH2..

There are 3 different battle systems in KH BBS, you use 3 different characters.

Nomura said that there will be gameplay changes between the characters not that there will be a different battle system for each of them.

Both games are going to be equal, just for the simple fact: DS hardware sales are huge compared to the PSP and PSP just has better technology to improve graphics.

Sales-wise I lean more to Kingdom Hearts: 358/2 Days for the DS.

BBS will be the better game! It looks GORGEOUS!... Btw: It runs on the full processor power of the PSP (That's bigger then the PS2 one, PSP version of KH runs at 333Mhz.

Pics:

KH 358/2 Days will sell better though, just for the simple fact that DS has a 21 million userbase in Japan. Looking at attachratio's, the PSP version will score better i think. (means it will sell less then the DS version but more % of the total PSP owners compared to the total of people in % who bought it i.c.w the total sales of the DS) PSP version will also get higher reviews i guess. But DS version is pushing the system too Looks like SQ-E knows how to work with DS hardware! ...