1. dlna support (lacking on the roku).
2. a browser [chrome?] so hbo go will work (it works on the appletv through comcast but not on the roku, apparently shotime anywhere also suffers this way). 3. a phone app that can also be used as a remote (typing into search fields on the roku app is awesome)
or there's some sort of throttling based on the streaming device going on?
This wouldn't surprise me in the slightest. Sometimes, they'll actively block certain devices. Just look at hbo go. I can stream on my computer or iphone app over wi-fi (or cellular), but, and this is the most retarded thing ever, it will not work on my roku because comcast and hbo go don't have a deal (which I don't get why they'd even have too, considering the previous 2 services work fine and both require linking my comcast and hbo accounts).