Both are heretical and they are in need of the truth of Orthodoxy.
Muslims are closer though. Muslims are monotheistic and their faith is derived from Christianity but they are heretics and their leaders have persecuted Christians for centuries. Buddhists are mainly atheists and have a dharmic religion.
You gotta be kidding me. Just because Islam has some similar external elements, that does not mean that they are closer to Christ's message. Buddhists are MUCH closer to Christ's message because they live peacefully, care for others and usually live very humble, monastic-like lives. I find that much more Christian than Islam, which advocates violence, intolerance and horror.
Nope buddhist deny pleasure and/or say it's finite when factually that's what life is all about, you're supposed to be happy, that's why God(The Father, The Son, and The Holy Spirit) made us, it's either you have pleasure(peace, happiness joy, etc) or suffer, buddhism is against both so it's automatically false, along with islam, you're stuck with The Truth of The Old and New Testament, with The True God who is YHWH(The Father, The Son, and The Holy Spirit).
as a matter of fact, since buddhism denies God(YHWH) given pleasures, it actually causes MORE harm, anger, and sin, we are stuck in a suffering world due to oppression(buddhism), violence(islam), rebellion("atheism"), and confusion("agnostics"), when Factually the only place we can get that cure is from The Father, The Son, and The Holy Spirit(God)
As Paul said,
1 Timothy 4:1-54 The Spirit clearly says that in later times some will abandon the faith and follow deceiving spirits and things taught by demons. 2 Such teachings come through hypocritical liars, whose consciences have been seared as with a hot iron. 3 They forbid people to marry and order them to abstain from certain foods, which God created to be received with thanksgiving by those who believe and who know the truth. 4 For everything God created is good, and nothing is to be rejected if it is received with thanksgiving, 5 because it is consecrated by the word of God and prayer.