true, but ash's Pikachu is at least level 150. My theory on him is that he used gameshark, that's how his Pikachu can OHKO a ground type with a thunder attack(First Movie while the opening credits roll). Normal pokemon can't usually take on more then one other pokemon at a time, unless there is a drastic difference in level.
Anyways, I closed all other programs and the demo was lag free, but I did notice one thing while playing; the wild pokemon spawn rate is too low. Throughout the entire demo, I only found ONE wild Pokemon. Is this intentional?