I am more than happy to compare the number of terrorist attacks (thwarted ones included) of Muslim converts with the number of terror attacks (thwarted ones included) by converts to other faiths and then draw any conclusions from these numbers.
Since I am not aware of even a single convert to a religion other than Islam who has engaged in terrorism or become a religious zealot, I guess I'll start with Muslim converts:
Here are some converted Muslim extremists who've made the headlines in the last eight years or so:
Abdulhakim Mujahid Muhammad who shot up a recruiting center a few months ago
http://www.foxnews.com/story/0,2933,524799,00.html
Shane Kent who pleaded guilty to terrorism charges after admitting to authorities that his terror cell (of six other Muslims) were plotting to blow up a stadium full of spectators. Just like the Mumbai hotel attackers, Kent wanted to kill thousands of non Muslims.
http://www.earthtimes.org/articles/show ... arges.html
Germaine Maurice Lindsay was one of the four suicide bombers that targeted Britain's transport systems on the July 7th, 2005. His bombing killed twenty six unbelievers.
http://en.wikipedia.org/wiki/Germaine_Lindsay
Isa Ibrahim, a young converted Muslim extremist who is on trial for making a suicide bomb vest with intent to use it. To Isa's defense, he never intended use the explosives he made in his flat. It's just common for youngsters these days to convert to Islam and then make their own suicide vest.
http://www.thisisbristol.co.uk/homepage ... ticle.html
Nicky Reilly, yet *another* Muslim convert in Britain who unsuccessfully (thankfully) set off a nail bomb in a restaurant.
http://www.dailymail.co.uk/news/article ... ttack.html
Richard Reid, the infamous 'shoe bomber' who boarded a plane shortly after the 9/11 jihad attacks and tried to set off his C-4 laden shoes.
http://en.wikipedia.org/wiki/Richard_Reid_(shoe_bomber)
Muriel Degauque, a female suicide bomber who, with her Muslim husband, joined al-Qaeda in Iraq, after her would be suicide bomber husband was shot dead in Iraq. She blew herself up but caused no fatalities other than her own.
http://www.timesonline.co.uk/tol/news/w ... 598536.ece