I'm not going to say I agree or disagree with his statement; I will, however, say that it is a stupid argument to have. Which one has more of an impact? How the fuck do you even measure that without going 20 years in the future? There's no point even really discussing it if you're going to be a jackass and take a side.
That said, I do find it somewhat interesting because the importance of LIVE is often down played, while the importance of the Wii remote is often overexagerated. I think about buying a Wii a lot. Usually this ends when I walk into a store and see the games available for it. Sure, that doesn't say much about the hardware itself, but it gets me thinking that while the controller can really add to games, the types of games that benefit from the control style are pretty limited.
I had a Wii at my house for like 6 months. Wii Sports is a lot of fun with three other people. Not so much fun by yourself. Apart from that I don't think we had another game in the machine for more than about 15 min. Tiger Woods and Madden were fun, but in the case of the later, you got kind of sick of the control scheme after a certain point. And that's the thing - it gets tedious with most of the games out there, not because they're designed poorly or because it's physically tiring, but because after a while you realise that randomly shaking or flicking the remote to control action on screen is the exact same fucking thing as just pushing a button, but just less efficient. And that's the problem - a ton of game types out there don't lend themselves to being actively controlled by motions you make. The wii remote by design almost limits itself. As much as the PS3 controller is bashed, I think it's more versatile and more usuable for most games. The addons for the wii remote do help though.
As for Live, yeah, it's done a lot because it realistically has pioneered new ground. At the time it came out there wasn't really a similair service at all on PCs, and certainly not on consoles. Sure, PCs could do all the things that live could do, but that's not the point - it showed that there is a market for online and that it could be built around to offer new gameplay expieriences, new markets, and new revenue streams resulting from new services for just about anyone. Sure, console online existed before live, but the most developed by far was the Dreamcast, and compairing that to LIVE is like compairing the old Logitech motion sensing gamepad to the wii remote...the latest offerings are just so much more evolved they're essentially different products.