Yes he did . He also neglected to say that Delaney had fallen out with Jeffries because he told him the truth about his chances, just as Sullivan had fallen out with him.
Jeffries had not only skipped boxing for 5 years, he had stopped training and weighed over 300 pounds.
No he did not weigh over 300 pounds and when he came back from Carlsbad in October 1909 he was down to fighting weight. That's 9 months before the fight.