My bottom line is if Jesus told His followers to baptize in the name of the Father, Son and Holy Spirit...then it would be best if they were obedient and did so.
And I don't actually have a problem with the notion that Jesus spoke with all authority, and most certainly for that time He was given to speak. Jesus was the closest thing to God anyone could manage for those who saw Him, and for the many who came after.
Here's the analogy I use -- if you look at the reflection of the sun in a mirror, you can say "That's the sun" and you'd be correct. You could also say "That's not the sun" because it's the image and not the actual sun. Both statements are true.
Likewise, if Jesus speaks as if He's God, that's correct. And if in another place He speaks as if He is not God, that is also correct.
Paradoxes are such fun.