The language we have to talk about religion often comes from Protestantism (this has been highly criticized in religious studies as a discipline since Jonathan Z. Smith's book started pointing it out in Drudgery Divine; a steady trickle of similar books followed). It is widely assumed that the Islamic world (particularly the Arab World) is going through a "revival" right now, which is obviously a particularly Protestant term (see for example, Politics of piety: The Islamic revival and the feminist subject, though that's not just about Salafism).

As for as "Wahhabism" (Wahhabis are not what the people call themselves, it's not quite the equivalent of calling Catholics "Papists", but it's not too far off), the biggest difference I'd draw is that while the American Great American was largely an internal to American society, there are much stronger 1) governmental and 2) international angles to the Salafi revival. The movement is very much tied to the ruling powers in the Persian Gulf, particularly the Saud dynasty. While it doesn't quite have a monopoly on government support in many of the Gulf States, it controls most of the Islamic thought in the country because of government support. Second, a lot of the Salafi revival in the rest of the world is funded by government and rich people in the Gulf States.

I did write a longer response a few days ago about the comparisons that can be made between the Protestant Reformation and the rapidly increasing popularity of the Salafis.