Absolutely. And the Rev can be compared to the others too..
And I always thought that the software tie-in ratio was A LOT less on the PSP than the DS, because of all the other features that took the focus away from gaming. In Japan, this is true; there DS games are selling like hotcakes and the ratio is much more than the PSP. However, over here, when the yearly numbers came in, the PSP software numbers were more than respectable. They were less than the DS if the bundles were counted, but they were still quite good. That was a big surprise, but I guess we'll have to see what happens next year to get more of an indication..