@MFDC12
3DS games are going to be able to hold a lot more data than old DS games. 2GB is the max capacity, and a 2GB microSD still costs a lot more than a single bluray disk. Not that all developers will tap that much capacity, but you're going to get a lot fewer 3DS games on a single microSD than you could with DS roms.
As for this article, i can't comment on the statement from THQ themselves, but i really don't deny the probability of the 3DS being hard as hell to hack. DSi has still yet to be hacked into, one can only assume that Nintendo is planning even more anti hacking features for 3DS. I think it will take more than a week to hack it unless some miracle exploit is found suddenly in a launch game or something. As it is though, it will take more than just a hack to get fully working flashcards (which have to be developed and mass manufactured). Then you have new firmware updates introduced with DSi (and will be increased with 3DS). So even with a hack and flashcard, you'd have to deal with a constant stream of mandatory firmware updates trying to block you out...
Nothing is unhackable. But nowadays, we have to deal with more aggressive companies trying to patch the hacks. I do think there will be more interest in hacking the 3DS though, than there was with the DSi. At this point though, it's useless to speculate on what will happen. There could very well be a glaring exploit that unlocks everything for all we know.