EVO has a lower resolution screen than the iPhone
EVO is physically larger and heavier than the iPhone, including a porky 0.5 inches thick - Apple makes a whole notebook about that thick
While there are now over 100,000 apps for Droid, the iPhone passed that benchmark years ago
Sprint's 4G network is very limited in deployment, available really only in some major metropolitan areas
PC magazines tests of speed show that in many cases, Sprint's 4G is slower than others 3G networks
The EVO costs more than an iPhone
The resale value of an iPhone will be higher than what you pay for it
And, according to Nielsen, "21% of all Android users would actually like to defect to an iPhone with their next purchase. The same number of would-be defectors in the iPhone camp is a mere 6%", so I guess users are happier with the experience on an iPhone

So while the cartoon tries to make the case that only an idiot would by an iPhone, it is actually the rational choice for many people.