I think the issue here is simple, while you see certain pockets of LTE rollout in Germany and Scandinavia--reports I have read say that the even there the footprints are tiny. Everywhere else in Europe is not even close to even beginning to roll it out. I've read that some countries will begin the process by 2013-2014. Places like France have not even allocated the spectrum yet. For all intents and purposes there is no LTE in Europe, regardless of the frequency, and there won't be any significant LTE footprint until possibly 2 or 3 years from now! For once the US isn't actually behind the curve! 🙄
As of right now the LTE chips are still kind of young--and with the mess that is the frequency ranges that will be adopted worldwide, there probably aren't any multiple-band chips on the market like with 3G. Plus they have to pack in the backwards 3G compatibility on top. I'm sure that the next iPad will include a multi-band LTE chip that will be even more efficient and will get all the major frequencies. Now of course, I understand not everybody wants to upgrade every year and if you buy this iPad hoping to eventually use 4G in your country in a year or two it's not gonna happen so that's a bummer. But ultimately what I think is going on is that Qualcomm doesn't yet have an LTE chip that covers many bands, so Apple chose the chip that will actually be put to use where there's a decent amount of coverage (N. America).
That still doesn't excuse the US once again using frequencies not only different from other major world standards, but among the US carriers themselves forcing lock-downs. Plus ça change, plus c'est la même chose....