I agree with your point. In fact I think it's even stronger as I don't think 10 miles on a bike is anywhere close to 600kcal unless we are talking very serious

I agree with your point. In fact I think it's even stronger as I don't think 10 miles on a bike is anywhere close to 600kcal unless we are talking very serious hills on a MTB. 10 miles on a flattish road is usually half an hour of moderate effort.