[pinkpanther]

The book of John is not synoptic and even so, those verses from John are ambiguous. You need to first believe Jesus is God before reading it and only then can you say Jesus is God because of those verses. 

The verse in Mark doesn't make Jesus God because saying Jesus is the son of God doesn't make Jesus God. There are many sons of God in the Bible.

You're correct that simply calling Jesus the "Son of God" doesn't automatically equate to claiming divinity, as the Bible refers to others as sons of God as well. However, in the context of the New Testament, Jesus’s use of titles and claims.....especially when combined with other statements—point toward His divine nature.