well, about this, I think I´m divided in two about my feelings!!!
for one side, I don´t like so much this idea, since, it means that he won´t be able to do a proper tour in South America!! as he hasn´t had done yet!! Ever!!!! remember that when he came here in 2010, it was only for 3 festivals, but we never had a single show of MIKA (entirely, only Mika) ! anyway, I realise it is because unless a producer brings him here for it, he won´t do it! and as in Italy he has someone willing to pay him for judging, it´s obvious he´ll stay there. I still hope he´ll keep working on his promotion here, because it´s the only way he´ll be able to have the financial support for a gig in South America...
on the other hand, as his fan, all I can say is that I hope it brings him a great experience, not only personally, but also PROFESSIONALLY talking! these programes like X factor are not aired here, but anyway, if he gets to have more support, and all that, it´s ok!
In conclusion, I only hope he won´t let his own music aside!