Practically no evolutionary biologist thinks that. All organisms living today have evolved for equally long. You've described a criteria - "logical brain" - an

Practically no evolutionary biologist thinks that. All organisms living today have evolved for equally long. You've described a criteria - "logical brain" - and then evaluated currently living organisms based on that, and determined humans to be the highest on that. That's not the same thing as being "most evolved". Evolution has no "direction", no goal beyond the ability to survive. It's dysteleological. Recommend The Big Picture by Sean Carrol for an overall overview of related questions.