Quite. Seems to be an excess of about 30HP and a difference of about 10Kts. He doesn't state what his definition of absolute ceiling is either. I thought it was based on rate of climb rather than Vx and Vy becoming coincident, which, according to the tangent method used there could only happen at a zero rate of climb (i.e. the tangent is horizontal).
I wouldn't blame google for this mistake though!
