Buddhism is anything but tolerant toward Christianity in majority-Buddhist nations.
"In Bhutan, all public worship and evangelism by non-Buddhists is illegal. When Bhutanese are discovered to have converted to Christianity, they are denied government benefits--including public education. Christians have been fired from their jobs and some have been expelled from the country. Two Christian evangelists were arrested...and imprisoned for six months without trial and finally received sentences of at least three years."
In Sri Lanka, "since 2003, more than 170 acts of violence have been recorded against Christians. In 2006, Buddhist clerics and politicians revived efforts to enact a federal anti-conversion law...which called for sentences of up to five years and/or a stiff fine..."
[Quotes from Voice of the Martyrs}
So much for those peaceful and tolerant Buddhists.