How is this a matter of "it's your turn". I really can't find a lot of information on GXL, but what I can does nothing to suggest it's in any way worth spending 5000+ dollars on. Maybe i52 isn't either, but if one of them is then it's definitely the latter.
Also it's kind of a joke to say "we can't fund a team to i52 cause now we have our own lan". The funding for Americans to come to i46/49 came from Europeans as well as Americans; Europeans who also had broder, punchline, and other top teams to fund to i46/i49, as well as the 300 or so attendees that had to pay for themselves - many of which attended from overseas.
If no American team wants to go then it's a different matter and everything I'm saying should be completely ignored, but given GXL isn't even confirmed to be anything special yet (based on the post on this thread, like I said info seems scarce) I really don't see how it's a contest. Granted there is more time until GXL, but if it's a bust it may be too late to salvage something for i52 by the time you find out.
Edit: Just read there is no PC rental at GXL. Really don't see how this is going to be possible.